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Denial of Service

other MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

How It Works

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions. Attackers exploit asymmetry: minimal attacker effort produces disproportionate resource consumption on the target. Application-level attacks use specially crafted inputs that trigger expensive operations—a regex engine processing malicious patterns can backtrack exponentially, or XML parsers recursively expand entities until memory exhausts. Network-level attacks flood targets with connection requests or amplify traffic through reflection, but application vulnerabilities often provide the most efficient attack surface.

The attack typically begins with reconnaissance to identify resource-intensive operations or unprotected endpoints. For algorithmic complexity attacks, adversaries craft inputs hitting worst-case performance—hash collision inputs filling hash tables with collisions, deeply nested JSON triggering recursive parsing, or pathological regex patterns like (a+)+b against strings of repeated 'a' characters. Resource exhaustion attacks open thousands of connections, upload massive files to unbounded storage, or trigger memory leaks through repeated operations. Crash-based attacks target error handling gaps: null pointer dereferences, unhandled exceptions in parsers, or assertion failures that terminate processes.

Impact

  • Service unavailability preventing legitimate users from accessing applications during attack duration
  • Revenue loss from downtime in e-commerce, SaaS platforms, or transaction processing systems
  • Cascading failures as resource exhaustion spreads to dependent services or database connections pool out
  • SLA violations triggering financial penalties and damaging customer trust
  • Security team distraction providing cover for data exfiltration or intrusion attempts running concurrently

Real-World Examples

CVE-2018-1000544 in Ruby's WEBrick server allowed ReDoS through malicious HTTP headers containing specially crafted patterns that caused the regex engine to backtrack exponentially, freezing request processing threads. A single attacker could saturate all available workers.

Cloudflare experienced a global outage in 2019 when a single WAF rule containing an unoptimized regex hit pathological cases on legitimate traffic spikes. The .*(?:.*=.*)* pattern exhibited catastrophic backtracking, consuming CPU cycles across their edge network until the rule was disabled.

CVE-2013-1664 demonstrated XML bomb vulnerabilities in Python's XML libraries. Attackers uploaded XML documents with nested entity definitions-each entity expanding to ten copies of the previous level. A 1KB upload could expand to gigabytes in memory during parsing, crashing applications instantly.

Mitigation

  • Strict input validation enforcing size limits, complexity bounds, and nesting depth restrictions before processing
  • Request rate limiting per IP address, API key, or user session with exponential backoff
  • Timeout enforcement terminating operations exceeding reasonable execution windows (typically 1-5 seconds)
  • Resource quotas limiting memory allocation, CPU time, and connection counts per request or tenant
  • Regex complexity analysis using linear-time algorithms or sanitizing patterns to eliminate backtracking
  • Circuit breakers automatically rejecting requests when error rates or latency thresholds indicate degradation
  • Load balancing and autoscaling distributing traffic across instances with automatic capacity expansion

Recent CVEs (36866)

EPSS 0% CVSS 7.3
HIGH POC PATCH This Week

runc is a CLI tool for spawning and running containers according to the OCI specification. Rated high severity (CVSS 7.3), this vulnerability is low attack complexity.

Denial Of Service Information Disclosure Runc +2
NVD GitHub
EPSS 1% CVSS 7.5
HIGH POC This Month

An issue was discovered in AnyDesk for Windows before 9.0.5, AnyDesk for macOS before 9.0.1, AnyDesk for Linux before 7.0.0, AnyDesk for iOS before 7.1.2, and AnyDesk for Android before 8.0.0. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Deserialization Google Apple +8
NVD
EPSS 0% CVSS 7.5
HIGH POC This Week

An issue in KiloView Dual Channel 4k HDMI & 3G-SDI HEVC Video Encoder Firmware v.1.20.0006 allows a remote attacker to cause a denial of service via the systemctrl API System/reFactory component. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Denial Of Service E3 Firmware
NVD GitHub
EPSS 0% CVSS 6.7
MEDIUM This Month

Dell CloudLink, versions prior to 8.2, contain use of a Cryptographic Primitive with a Risky Implementation vulnerability. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.

Dell Denial Of Service Cloudlink +1
NVD
EPSS 0% CVSS 8.6
HIGH This Month

A vulnerability in the RADIUS setting Reject RADIUS requests from clients with repeated failures on Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause Cisco. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Cisco Identity Services Engine
NVD
EPSS 0% CVSS 5.5
MEDIUM POC PATCH This Month

An issue was discovered in libarchive bsdtar before version 3.8.1 in function apply_substitution in file tar/subst.c when processing crafted -s substitution rules. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Denial Of Service Libarchive Red Hat +1
NVD GitHub
EPSS 0% CVSS 7.5
HIGH POC PATCH This Month

A denial of service vulnerability exists in the lasso_node_init_from_message_with_format functionality of Entr'ouvert Lasso 2.5.1. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Denial Of Service Lasso Red Hat +1
NVD
EPSS 0% CVSS 7.5
HIGH POC PATCH This Month

A denial of service vulnerability exists in the g_assert_not_reached functionality of Entr'ouvert Lasso 2.5.1 and 2.8.2. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Denial Of Service Lasso Red Hat +1
NVD
EPSS 0% CVSS 7.5
HIGH POC PATCH This Month

A denial of service vulnerability exists in the lasso_provider_verify_saml_signature functionality of Entr'ouvert Lasso 2.5.1. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Denial Of Service Null Pointer Dereference Lasso +2
NVD
EPSS 0% CVSS 6.0
MEDIUM This Month

CVE-2025-59596 is a denial-of-service vulnerability in Secure Access Windows client versions 12.0 to 14.10 that is addressed in version 14.12. Rated medium severity (CVSS 6.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Microsoft Secure Access +1
NVD
EPSS 0% CVSS 8.2
HIGH This Month

CVE-2025-59595 is an internally discovered denial of service vulnerability in versions of Secure Access prior to 14.12. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Secure Access
NVD
EPSS 0% CVSS 7.5
HIGH This Month

An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 2100, 1280, 2200, 1330, 1380, 1480, 9110, Modem 5123. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Samsung Modem 5123 Firmware +7
NVD
EPSS 0% CVSS 7.5
HIGH This Month

An issue was discovered in the NPU driver in Samsung Mobile Processor Exynos 1280, 2200, 1380, 1480, 2400, 1580, 2500. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Samsung +7
NVD
EPSS 0% CVSS 7.5
HIGH This Month

An issue was discovered in Samsung Mobile Processor Exynos 2400, 1580, 2500. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Buffer Overflow +4
NVD
EPSS 0% CVSS 7.5
HIGH This Month

An issue was discovered in Samsung Mobile Processor Exynos 2400, 1580, 2500. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Buffer Overflow Samsung +4
NVD
EPSS 0% CVSS 7.5
HIGH This Month

An issue was discovered in NPU in Samsung Mobile Processor Exynos 1380 through July 2025. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Samsung +1
NVD
EPSS 0% CVSS 4.2
MEDIUM Monitor

In apusys, there is a possible memory corruption due to use after free. Rated medium severity (CVSS 4.2), this vulnerability is low attack complexity. No vendor patch available.

Buffer Overflow Memory Corruption Denial Of Service +4
NVD
EPSS 0% CVSS 4.2
MEDIUM Monitor

In pda, there is a possible escalation of privilege due to use after free. Rated medium severity (CVSS 4.2), this vulnerability is low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Use After Free +3
NVD
EPSS 0% CVSS 4.2
MEDIUM Monitor

In clkdbg, there is a possible escalation of privilege due to use after free. Rated medium severity (CVSS 4.2), this vulnerability is low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Use After Free +3
NVD
EPSS 0% CVSS 5.8
MEDIUM This Month

The service employed by Everything, running as SYSTEM, communicates with the lower privileged Everything GUI via a named pipe. Rated medium severity (CVSS 5.8). No vendor patch available.

Denial Of Service Privilege Escalation
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

A use after free issue was addressed with improved memory management. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Apple +1
NVD
EPSS 0% CVSS 7.5
HIGH This Week

The issue was addressed with improved memory handling. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Apple
NVD
EPSS 0% CVSS 4.3
MEDIUM PATCH This Month

This issue was addressed through improved state management. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Apple Red Hat +1
NVD
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

A use-after-free issue was addressed with improved memory management. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Apple +5
NVD VulDB
EPSS 0% CVSS 4.3
MEDIUM PATCH This Month

This issue was addressed with improved checks. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Apple Red Hat +1
NVD
EPSS 0% CVSS 4.3
MEDIUM PATCH This Month

A use-after-free issue was addressed with improved memory management. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Apple +5
NVD VulDB
EPSS 0% CVSS 4.3
MEDIUM PATCH This Month

A use-after-free issue was addressed with improved memory management. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Apple +3
NVD
EPSS 0% CVSS 4.3
MEDIUM PATCH This Month

A use-after-free issue was addressed with improved memory management. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Apple +3
NVD
EPSS 0% CVSS 4.3
MEDIUM PATCH This Month

This issue was addressed through improved state management. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Apple Red Hat +1
NVD
EPSS 0% CVSS 4.3
MEDIUM PATCH This Month

This issue was addressed through improved state management. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Apple Red Hat +1
NVD
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. This Allocation of Resources Without Limits vulnerability could allow attackers to exhaust system resources through uncontrolled allocation.

Denial Of Service Mantisbt
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM This Month

IBM Cloud Pak For Business Automation 25.0.0, 24.0.1, and 24.0.0 could allow an authenticated user to cause a denial of service due to the improper validation of input length. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Denial Of Service IBM Cloud Pak For Business Automation
NVD
EPSS 0% CVSS 6.5
MEDIUM POC This Week

NetSurf 3.11 is vulnerable to Use After Free in dom_node_set_text_content function. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Memory Corruption Denial Of Service Use After Free +1
NVD GitHub
EPSS 0%
PATCH

In the Linux kernel, the following vulnerability has been resolved: can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled This issue is similar to the.

Denial Of Service Linux Linux Kernel
NVD
EPSS 0% CVSS 10.0
CRITICAL This Week

Denial of Service Due to SlowLoris.19.5; BLU-IC4: through 1.19.5. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Blu Ic2 Firmware Blu Ic4 Firmware
NVD
EPSS 0% CVSS 6.2
MEDIUM PATCH This Month

Stack-based buffer overflow in QEMU's e1000 network device emulation allows local guest users to crash the QEMU process via crafted short frames in loopback mode, causing denial of service on the host. The vulnerability exists in the e1000_receive_iov() function where frame padding logic was removed from the device layer but loopback mode still processes short frames unsafely. No public exploit code or active exploitation in KEV has been reported at time of analysis.

Stack Overflow Denial Of Service Buffer Overflow
NVD
EPSS 0% CVSS 7.1
HIGH PATCH This Week

Configuration file manipulation in ELOG electronic logbook system allows authenticated attackers to trigger denial of service by modifying or overwriting the configuration file. If the rarely-used execute facility is enabled via '-x' command line flag, the vulnerability escalates to remote code execution on the underlying host. Vendor patches are available via Bitbucket commits 7092ff6 and f81e569. EPSS data not available; no CISA KEV listing indicates targeted rather than widespread exploitation. The 7.1 CVSS 4.0 score reflects high availability impact and low integrity impact under default configurations, with significantly higher risk in non-default deployments using the execute facility.

Authentication Bypass Denial Of Service Elog
NVD
EPSS 0% CVSS 7.5
HIGH This Week

Denial of service in the Tenda AC8 dual-band gigabit router (hardware revision v03.03.10.01) allows a remote attacker to crash the device by sending a single crafted packet to its UPnP service, triggering a stack-based buffer overflow (CWE-121). The flaw requires no authentication or user interaction per the CVSS vector (PR:N/UI:N) and impacts availability only (A:H, no confidentiality/integrity impact). Publicly available exploit material exists via a researcher GitHub repository, though the issue is not listed in CISA KEV and carries a modest EPSS score of 0.39% (31st percentile).

Buffer Overflow Tenda Denial Of Service +2
NVD GitHub
EPSS 0% CVSS 7.3
HIGH PATCH This Week

Use-after-free in X.Org X server and Xwayland during Present extension notification processing allows local authenticated users to achieve arbitrary code execution or denial of service. The flaw affects core display server components across multiple Linux distributions, with Red Hat confirming patches through 15 security advisories (RHSA-2025:19432 through RHSA-2025:22055). CVSS 7.3 reflects high integrity and availability impact with low confidentiality impact. No active exploitation confirmed (not in CISA KEV). EPSS data not provided, but the local attack vector and authentication requirement reduce remote exploitation risk despite the severity of potential impact.

Use After Free Memory Corruption Denial Of Service +4
NVD
EPSS 0% CVSS 7.5
HIGH This Week

Denial of service in Prevx 3.0.5.220 lets a local attacker terminate protected processes by sending IOCTL code 0x22E044 to the pxscan.sys kernel driver, which force-kills every process enumerated under the HKLM\System\CurrentControlSet\Services\pxscan\Files registry key. A GitHub repository named for the CVE indicates publicly available exploit code exists, though the vulnerability is not in CISA KEV and carries a low EPSS score of 0.34% (26th percentile). Prevx is a long-retired anti-malware product (absorbed into Webroot circa 2011), so real-world exposure is minimal.

Denial Of Service
NVD GitHub
EPSS 0% CVSS 1.9
LOW POC Monitor

Null pointer dereference in Kamailio 5.5.0's grammar rule handler (src/core/cfg.y, yyerror_at function) causes denial of service when processing malformed configuration files. Local authenticated attackers can trigger the vulnerability by manipulating config files, resulting in application crash. Publicly available exploit code exists, but exploitation requires local access and config file manipulation, limiting real-world attack surface. EPSS score of 0.03% indicates minimal exploitation probability despite disclosed POC.

Denial Of Service Kamailio
NVD VulDB
EPSS 0% CVSS 1.9
LOW POC Monitor

Kamailio 5.5.0 suffers a null pointer dereference in the rve_is_constant function (src/core/rvalue.c) triggered by manipulation of local configuration files, resulting in denial of service. The attack requires local access with low privileges and produces only availability impact. Publicly available exploit code exists, but active exploitation has not been confirmed by CISA KEV, and the vulnerability's genuine existence remains disputed by the original reporter. Real-world risk is minimal given the low EPSS score (0.03%), requirement for config file manipulation, and minimal impact surface.

Denial Of Service Kamailio
NVD VulDB
EPSS 0% CVSS 1.9
LOW POC Monitor

Use-after-free vulnerability in Kamailio 5.5.0 configuration file parser allows local authenticated attackers to cause denial of service or memory corruption via malformed configuration files. The vulnerability exists in the sr_push_yy_state function within the lexical analyzer (cfg.lex) and has publicly available exploit code, though the vendor has not responded to disclosure and practical exploitability remains uncertain due to the requirement for direct configuration file manipulation.

Buffer Overflow Denial Of Service Kamailio
NVD VulDB
EPSS 0% CVSS 6.2
MEDIUM This Month

Denial of service in the Realtek NDIS Usermode IO driver (RtkIOAC60.sys v6.0.5600.16348) on Windows allows a local authenticated attacker to crash or hang the driver by sending a specially crafted IOCTL request to the device. The root cause is uncontrolled resource consumption (CWE-400), meaning the driver fails to properly validate or bound input from the IOCTL, leading to availability loss. No public exploit code or active exploitation has been identified at time of analysis; EPSS sits at the 4th percentile, reflecting minimal observed scanning or exploitation activity.

Denial Of Service
NVD
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Remote denial-of-service in libsoup affects GNOME and WebKit-based applications that rely on the library for HTTP/2 client communication. A race in the asynchronous message-queue handling lets a queue item be freed twice when network operations are aborted at precise timing, producing a use-after-free that crashes the consuming application. Red Hat reported the issue and has shipped errata fixes; there is no public exploit identified at time of analysis and the flaw is confined to availability impact (no code execution or data exposure indicated).

Memory Corruption Apple Denial Of Service +1
NVD
EPSS 0% CVSS 1.9
LOW POC Monitor

A vulnerability was detected in DCMTK up to 3.6.7. Rated low severity (CVSS 1.9), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Denial Of Service Dcmtk
NVD VulDB
EPSS 0% CVSS 7.5
HIGH This Week

Denial-of-analysis in CAPEv2, the open-source malware analysis sandbox, lets anyone able to submit a sample sabotage the platform's own reporting pipeline. A crafted sample that emits deeply nested or oversized behavior data trips MongoDB BSON size limits or orjson recursion errors in reporting/mongodb.py and reporting/jsondump.py, causing the behavioral report to be truncated or dropped entirely. Rated CVSS 7.5 (availability-only); EPSS is modest at 0.39% (31st percentile) and there is no public exploit identified at time of analysis, though the vector is trivial for anyone who can run a sample.

Denial Of Service
NVD GitHub
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

Kernel crash in Linux kernel Cadence QSPI driver (cadence-quadspi) allows authenticated local attackers with moderate privileges to cause denial of service by unbinding the driver during active indirect read or write operations. The vulnerability affects Linux kernel versions including 6.17-rc1 through rc4 and potentially earlier versions; exploitation requires root access to force device removal, but the EPSS score of 0.01% indicates minimal real-world exploitation probability despite the availability of upstream fixes in stable kernel branches.

Denial Of Service Linux
NVD
EPSS 1% CVSS 7.5
HIGH This Week

Denial of service in Ascertia SigningHub v8.6.8 stems from a missing rate limit on the /Home/UploadStreamDocument endpoint, letting attackers flood the server with an excessive number of file uploads until resources are exhausted and the e-signature service becomes unavailable. The CVSS vector marks it network-reachable and unauthenticated (PR:N) with high availability impact but no confidentiality or integrity effect. A GitHub repository (saykino/CVE-2025-56223) associated with the CVE indicates publicly available exploit code exists; the flaw is not in CISA KEV and EPSS exploitation probability is modest at 0.54%.

Denial Of Service Signinghub
NVD GitHub
EPSS 0% CVSS 7.1
HIGH This Week

Uncontrolled account creation in Ascertia SigningHub v8.6.8 allows an attacker to repeatedly add user accounts with no rate limiting, driving resource exhaustion and a denial-of-service condition on the e-signature platform. The flaw stems from improper access control (CWE-284) around the account-provisioning function and is exploitable over the network by a low-privileged actor per the CVSS vector (PR:L). Publicly available exploit code exists (GitHub saykino/CVE-2025-56219), but there is no confirmed active exploitation and EPSS remains low at 0.37% (29th percentile).

Authentication Bypass Denial Of Service Signinghub
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM This Month

PHP object injection in Vfront 0.99.52's mexcel.php endpoint exposes an unauthenticated POST parameter directly to unserialize() without class restrictions, enabling remote attackers to instantiate arbitrary PHP objects. Depending on exploitable gadget chains present in the Vfront codebase or its PHP dependencies, this can escalate to remote code execution, SQL injection, path traversal, or denial of service. No public exploit has been identified at time of analysis, and EPSS places exploitation probability at 0.40% (32nd percentile), consistent with the absence of a CISA KEV listing.

Deserialization Path Traversal SQLi +3
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

Double free memory management vulnerability in Apple operating systems (iOS, iPadOS, macOS, tvOS, visionOS, watchOS) allows local apps to trigger unexpected system termination through memory corruption. Affecting iOS 18.5 and earlier, iPadOS 18.5 and earlier, macOS Sequoia 15.5 and earlier, macOS Sonoma 14.7.6 and earlier, macOS Ventura 13.7.6 and earlier, tvOS 18.5 and earlier, visionOS 2.5 and earlier, and watchOS 11.5 and earlier. No public exploit code or active exploitation confirmed; EPSS score of 0.01% indicates minimal real-world exploitation probability despite moderate CVSS rating.

Apple iOS macOS +7
NVD
EPSS 0% 5.8 CVSS 9.3
CRITICAL POC KEV THREAT Emergency

F5 BIG-IP APM (Access Policy Manager) contains a remote code execution vulnerability triggered by specific malicious traffic when an access policy is configured on a virtual server.

RCE Denial Of Service
NVD VulDB GitHub
EPSS 0%
Awaiting Data

In the Linux kernel, the following vulnerability has been resolved: nexthop: Forbid FDB status change while nexthop is in a group The kernel forbids the creation of non-FDB nexthop groups with FDB nexthops: # ip nexthop add id 1 via 192.0.2.1 fdb # ip nexthop add id 2 group 1 Error: Non FDB nexthop group cannot have fdb nexthops. And vice versa: # ip nexthop add id 3 via 192.0.2.2 dev dummy1 # ip nexthop add id 4 group 3 fdb Error: FDB nexthop group can only have fdb nexthops. However, as long as no routes are pointing to a non-FDB nexthop group, the kernel allows changing the type of a nexthop from FDB to non-FDB and vice versa: # ip nexthop add id 5 via 192.0.2.2 dev dummy1 # ip nexthop add id 6 group 5 # ip nexthop replace id 5 via 192.0.2.2 fdb # echo $? 0 This configuration is invalid and can result in a NPD [1] since FDB nexthops are not associated with a nexthop device: # ip route add 198.51.100.1/32 nhid 6 # ping 198.51.100.1 Fix by preventing nexthop FDB status change while the nexthop is in a group: # ip nexthop add id 7 via 192.0.2.2 dev dummy1 # ip nexthop add id 8 group 7 # ip nexthop replace id 7 via 192.0.2.2 fdb Error: Cannot change nexthop FDB status while in a group. [1] BUG: kernel NULL pointer dereference, address: 00000000000003c0 [...] Oops: Oops: 0000 [#1] SMP CPU: 6 UID: 0 PID: 367 Comm: ping Not tainted 6.17.0-rc6-virtme-gb65678cacc03 #1 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-4.fc41 04/01/2014 RIP: 0010:fib_lookup_good_nhc+0x1e/0x80 [...] Call Trace: <TASK> fib_table_lookup+0x541/0x650 ip_route_output_key_hash_rcu+0x2ea/0x970 ip_route_output_key_hash+0x55/0x80 __ip4_datagram_connect+0x250/0x330 udp_connect+0x2b/0x60 __sys_connect+0x9c/0xd0 __x64_sys_connect+0x18/0x20 do_syscall_64+0xa4/0x2a0 entry_SYSCALL_64_after_hwframe+0x4b/0x53

Denial Of Service Linux
NVD VulDB
EPSS 0%
Awaiting Data

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() This code calls kfree_rcu(new_node, rcu) and then dereferences "new_node" and then dereferences it on the next line. Two lines later, we take a mutex so I don't think this is an RCU safe region. Re-order it to do the dereferences before queuing up the free.

Denial Of Service Linux
NVD
EPSS 0% CVSS 7.8
HIGH This Week

Local code execution in Microsoft Office (including 365 Apps Enterprise, Office 2016/2019, and Office LTSC 2021 across Windows, macOS, and Android) is possible when a victim opens a maliciously crafted document that triggers a use-after-free condition. An unauthorized attacker who convinces a user to open the file can execute arbitrary code in the context of the current user, with no public exploit identified at time of analysis. CVSS is 7.8 reflecting local attack vector with required user interaction but full confidentiality, integrity, and availability impact.

Memory Corruption Microsoft Denial Of Service +4
NVD
EPSS 0% CVSS 7.8
HIGH This Week

Local code execution in Microsoft Office (including Microsoft 365 Apps Enterprise, Office 2016/2019, and Office LTSC 2021 across Windows x86/x64, macOS, and Android) arises from a use-after-free memory corruption (CWE-416) that an attacker can trigger by convincing a user to open a crafted document. Exploitation runs in the context of the current user with high impact on confidentiality, integrity, and availability. No public exploit identified at time of analysis and the issue is not currently listed in CISA KEV.

Memory Corruption Microsoft Denial Of Service +4
NVD
EPSS 0% CVSS 2.7
LOW Monitor

Authenticated denial-of-service in Fortinet FortiOS allows a high-privileged user to crash the HTTP daemon via a specially crafted API request. The root cause is an unchecked return value (CWE-252) that triggers a null pointer dereference in the HTTP daemon, resulting in a temporary service disruption. EPSS exploitation probability is 0.06% (20th percentile), no KEV listing, and no public exploit identified at time of analysis, placing this as low operational priority despite network-reachable attack vector.

Fortinet Denial Of Service Fortios
NVD
EPSS 0% CVSS 3.1
LOW Monitor

A flaw was found in the exsltFuncResultComp() function of libxslt, which handles EXSLT <func:result> elements during stylesheet parsing. Due to improper type handling, the function may treat an XML document node as a regular XML element node, resulting in a type confusion. This can cause unexpected memory reads and potential crashes. While difficult to exploit, the flaw could lead to application instability or denial of service.

Memory Corruption Denial Of Service
NVD VulDB
EPSS 0% CVSS 5.7
MEDIUM POC This Month

A vulnerability was found in Tenda W12 3.0.0.6(3948). The impacted element is the function wifiScheduledSet of the file /goform/modules of the component HTTP Request Handler. The manipulation of the argument wifiScheduledSet results in null pointer dereference. The attack may be performed from remote. The exploit has been made public and could be used.

Tenda Denial Of Service W12 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: call disconnect callback before deleting conn In hci_cs_disconnect, we do hci_conn_del even if disconnection. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

Use After Free Denial Of Service Linux +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: fs: dlm: fix use after free in midcomms commit While working on processing dlm message in softirq context I experienced the. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.

Linux Red Hat Use After Free +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: blk-mq: use quiesced elevator switch when reinitializing queues The hctx's run_work may be racing with the elevator switch when. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

Use After Free Denial Of Service Memory Corruption +4
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A null pointer dereference vulnerability exists in the Linux kernel's AMD display driver (drm/amd/display) within the dm_resume() function, where the aconnector->dc_link pointer is dereferenced without proper null checks. An unprivileged local attacker with user-level access can trigger a kernel panic and cause a denial of service by inducing a display resume operation. While the CVSS score is moderate (5.5) and EPSS exploitation probability is very low (0.01%), this vulnerability is straightforward to trigger given local access and affects all Linux kernel versions with the vulnerable AMD display driver code.

Linux Denial Of Service Null Pointer Dereference +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A logic error in the Linux kernel's device mapper thin pool module causes infinite loops and system hangs when metadata commits fail. The vulnerability affects Linux kernel systems with dm-thin storage pools; when a commit fails during btree metadata operations, the pmd->root pointer is not properly restored to the last valid transaction state, causing subsequent read operations to traverse a corrupted btree structure. An unprivileged local attacker with access to the system can trigger this denial of service condition, resulting in kernel softlockups and system hangs. While no public exploit code is widely distributed, the vulnerability is straightforward to trigger through storage I/O operations on affected systems.

Linux Denial Of Service Linux Kernel +2
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A null pointer dereference vulnerability exists in the Linux kernel's WiFi mac80211 MLME (MAC Layer Management Entity) implementation that crashes the kernel during WiFi association tracing when an AP connection without link 0 fails. The vulnerability affects all Linux kernel versions with the vulnerable code path in the mac80211 wireless driver subsystem, allowing a local authenticated attacker to trigger a denial of service condition. The EPSS score of 0.01% indicates this is rarely exploited in practice, though patches are publicly available from kernel.org.

Linux Denial Of Service Null Pointer Dereference +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A resource leak vulnerability exists in the Linux kernel's mpt3sas SCSI transport driver where the sas_rphy_add() function can fail without properly freeing allocated resources, leading to a NULL pointer dereference and kernel crash during device removal. This affects Linux kernel implementations across multiple versions that use the mpt3sas driver for SAS (Serial Attached SCSI) HBA management. An unprivileged local attacker with sufficient privileges to trigger transport port operations can cause a denial of service by inducing a kernel panic, though the low EPSS score of 0.01% suggests exploitation is not practically demonstrated in the wild.

Linux Denial Of Service Linux Kernel +2
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A null pointer dereference vulnerability exists in the Linux kernel's block layer (blk-mq) memory allocation path that can be triggered by a local, low-privileged user to cause a denial of service. The vulnerability affects Linux kernel versions including 6.1-rc1 and potentially other versions where a failed memory allocation during block queue tag initialization leaves a dangling pointer that is later dereferenced during cleanup. While the EPSS score is low (0.02%, percentile 4%), the vulnerability is straightforward to trigger under memory pressure conditions, requires only local access with minimal privileges, and has vendor patches available.

Linux Null Pointer Dereference Denial Of Service +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A memory leakage and potential segmentation fault vulnerability exists in the Linux kernel's AMD KFD (Kernel Fusion Driver) GPU memory management subsystem, specifically in the _gpuvm_import_dmabuf() function. The vulnerability affects Linux kernel versions across multiple branches and can be exploited by local users with low privilege levels to cause denial of service through memory corruption. Patches are available from the Linux kernel stable branches, and while the EPSS score is very low (0.01%, percentile 3%), the vulnerability has moderate CVSS severity (5.5) due to its ability to cause system availability impact.

Linux Denial Of Service Memory Corruption +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A null pointer dereference vulnerability exists in the Linux kernel's AMD GPU (amdgpu) driver in the amdgpu_bo_validate_size() function. When validating buffer object sizes for non-exclusive memory domains, the function fails to verify that the TTM (Translation Table Maps) domain manager exists before dereferencing it, leading to a kernel oops and denial of service. Local attackers with unprivileged user privileges can trigger this vulnerability to crash the system. While patches are available from the vendor, the EPSS score of 0.01% and very low exploitation probability suggest this is a low-priority issue in practice despite the denial-of-service impact.

Linux Denial Of Service Null Pointer Dereference +3
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

A memory corruption vulnerability exists in the Linux kernel's MSM display port driver that occurs when more than eight display bridges are connected, allowing local attackers with low privileges to corrupt kernel memory beyond a fixed-size array. The vulnerability affects Linux kernel versions up to 6.1-rc2 and requires local access to exploit, with no known active exploitation in the wild (not in KEV) and a very low EPSS score of 0.02% indicating minimal real-world exploitation likelihood.

Memory Corruption Linux Buffer Overflow +4
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A resource leak vulnerability exists in the Linux kernel's FSL PAMU (Freescale Peripheral Access Management Unit) IOMMU driver where the fsl_pamu_probe() function fails to release IRQ and memory resources when the create_csd() function returns an error, allowing a local privileged attacker to cause a denial of service through resource exhaustion. The vulnerability affects multiple Linux kernel versions across stable branches and has an EPSS score of 0.01% (percentile 2%), indicating low real-world exploitation probability despite the moderate CVSS 5.5 score. Patches are available from the Linux kernel maintainers across multiple stable branches.

Linux Denial Of Service Linux Kernel +2
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A null pointer dereference vulnerability exists in the Linux kernel's MediaTek IOMMU driver where the platform_get_resource() function may return a NULL pointer without proper validation, leading to a crash when resource_size() attempts to dereference it. This affects all versions of the Linux kernel with the vulnerable MediaTek IOMMU code. A local attacker with low privileges can trigger a denial of service by causing a kernel panic, though the vulnerability is unlikely to be actively exploited in the wild given the low EPSS score of 0.01%.

Linux Null Pointer Dereference Denial Of Service +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A memory leak vulnerability exists in the Linux kernel's Rockchip clock driver (rockchip_clk_register_pll function) where allocated memory from kmemdup() is not freed when clk_register() fails, potentially causing denial of service through memory exhaustion. All versions of the Linux kernel with Rockchip clock support are affected. An attacker with local privileges can trigger repeated clock registration failures to exhaust system memory and crash the system, with an EPSS score of 0.01% indicating very low real-world exploitation probability despite the moderate CVSS score of 5.5.

Linux Memory Corruption Denial Of Service +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A memory leak vulnerability exists in the Linux kernel's mxm-wmi (MXM WMI) platform driver where the ACPI buffer returned by wmi_evaluate_method() is not properly freed after invocation, leading to kernel memory exhaustion and potential denial of service. The vulnerability affects all versions of the Linux kernel with the mxm-wmi driver enabled, particularly systems with NVIDIA/AMD discrete GPU switching support. A local attacker with standard user privileges can repeatedly trigger the affected code path to exhaust kernel memory and crash the system, though the extremely low EPSS score (0.01th percentile) suggests exploitation is not actively observed in the wild.

Linux Denial Of Service Memory Corruption +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

This vulnerability in the Linux kernel's NILFS2 filesystem causes a kernel panic when the system is booted with panic_on_warn enabled and checkpoint metadata corruption is detected. A local attacker with standard user privileges can trigger this denial of service by crafting malicious NILFS2 filesystem images or corrupting checkpoint metadata on disk, causing the kernel to panic and crash the system. The vulnerability affects multiple Linux kernel versions across several stable branches, with patches available from the vendor, but EPSS exploitation probability remains very low at 0.01 percentile, indicating this is not actively exploited in the wild.

Linux Denial Of Service Linux Kernel +2
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A memory corruption vulnerability in the Linux kernel's huge page (THP) split handling causes a soft lockup and denial of service when page->private is incorrectly clobbered during transparent huge page operations. The vulnerability affects Linux kernel versions 5.19 through 6.1-rc1, and while it requires local privilege access to trigger via madvise syscalls, it can reliably cause system hangs under stress conditions such as memory pressure or aggressive swapping scenarios. The EPSS score of 0.02% and lack of widespread active exploitation indicate low real-world risk, though the availability of patches makes remediation straightforward.

Linux Denial Of Service Memory Corruption +4
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A denial of service vulnerability (CVSS 5.5). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Denial Of Service Null Pointer Dereference +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A memory leak vulnerability exists in the Linux kernel's AMD GPU (amdgpu) driver within the hpd_rx_irq_create_workqueue() function, where allocated memory for work queue structures fails to be properly freed if workqueue construction fails partway through initialization. This affects all Linux kernel versions with the vulnerable amdgpu driver code and requires local access with low privileges to trigger. An attacker can repeatedly trigger this condition to exhaust kernel memory and cause a denial of service, though the EPSS score of 0.01% indicates this is rarely exploited in practice. Patches are available from the Linux kernel stable branches.

Linux Memory Corruption Denial Of Service +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A reference count leak exists in the Linux kernel's USB HID gadget driver (f_hid module) where the opts->refcnt is incremented but not properly decremented when report_desc allocation fails, leaving the options structure permanently locked and causing a denial of service condition. This affects all Linux kernel versions running the vulnerable USB gadget code path and requires local privilege to trigger. While the CVSS score is 5.5 (medium) and EPSS is extremely low at 0.01th percentile, patches are available from multiple stable kernel branches, indicating this is a real but low-priority issue with no known active exploitation.

Linux Denial Of Service Memory Corruption +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A memory leak vulnerability exists in the Linux kernel's rtl8723bs WiFi driver initialization function rtw_init_cmd_priv(), where failure to allocate the response command buffer leaves the command buffer allocation unreleased. This affects all Linux kernel versions containing the vulnerable staging driver code and can be exploited by local attackers with low privileges to cause a denial of service through memory exhaustion. The vulnerability has a vendor-provided patch available across multiple stable kernel branches, and the EPSS score of 0.01% indicates minimal real-world exploitation probability despite the moderate CVSS 5.5 rating.

Linux Memory Corruption Denial Of Service +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

This vulnerability is an undefined behavior issue in the Linux kernel's font handling code where a signed 32-bit left shift by 31 bits violates C language semantics, detected by UBSAN (Undefined Behavior Sanitizer). The vulnerability affects multiple Linux kernel versions starting from 2.6.23 and can be triggered by local users with low privileges during framebuffer console initialization, leading to denial of service through undefined behavior exploitation. While the EPSS score is extremely low at 0.01% (percentile 3%), patches are available from the kernel vendor and the issue has been resolved in stable releases.

Linux Integer Overflow Denial Of Service +3
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A resource cleanup vulnerability exists in the Linux kernel's ARM SMMUv3 Performance Monitoring Unit (PMU) initialization code where a CPU hotplug callback registered via cpuhp_setup_state_multi() is not properly removed if platform_driver_register() fails, leading to a use-after-free condition. This affects Linux kernel versions across multiple stable branches and can be exploited by local attackers with limited privileges to trigger a denial of service through kernel panic or memory corruption. The vulnerability has a patch available from multiple kernel branches, with an EPSS score of 0.01% indicating low real-world exploitation probability despite the moderate CVSS 5.5 score.

Linux Denial Of Service Linux Kernel +2
NVD VulDB
EPSS 2% CVSS 9.1
CRITICAL Act Now

Authenticated OS command injection in the EndRun Technologies Sonoma D12 GPS Network Time Server (firmware 6010-0071-000, Ver 4.00) lets a privileged remote user inject arbitrary operating-system commands that run outside the vulnerable component, yielding full device takeover, denial of service, privilege escalation, and disclosure of sensitive timing/configuration data. Because Network Time Servers act as an authoritative time source for entire environments, compromise can cascade into time-manipulation attacks against downstream systems (logging, certificates, Kerberos). This is no public exploit identified at time of analysis, though a third-party advisory (xdiv-sec) documents the flaw; EPSS is modest at 1.63% (73rd percentile).

Command Injection Denial Of Service RCE +1
NVD
EPSS 2% CVSS 9.1
CRITICAL Act Now

OS command injection in the EndRun Technologies Sonoma D12 GPS Network Time Server (firmware 6010-0071-000, Ver 4.00) lets an authenticated high-privileged operator inject shell commands into the appliance's underlying OS, escaping the management application to run arbitrary code as the device. Because the appliance is a hardened timing source, successful exploitation yields full compromise: code execution, denial of service, privilege escalation, and disclosure of sensitive data. No public exploit is identified at time of analysis, though a third-party research advisory (xdiv-sec) documents the finding; the EPSS score is moderate at 1.63% (73rd percentile) and the CVE is not on CISA KEV.

Command Injection Denial Of Service RCE +1
NVD
EPSS 1% CVSS 8.2
HIGH This Week

OS command injection in the EndRun Technologies Sonoma D12 GPS Network Time Server (firmware 6010-0071-000 Ver 4.00) lets remote attackers inject shell commands that the appliance executes, enabling arbitrary code execution, denial of service, privilege escalation, and disclosure of sensitive data. The NVD CVSS 3.1 base score is 8.2 (AV:N/AC:L/PR:N/UI:N) and a third-party technical advisory (xdiv-sec) has been published, but there is no public exploit identified at time of analysis and the flaw is not on CISA KEV. EPSS is modest at 1.20% (64th percentile), indicating no observed mass exploitation to date.

Command Injection Denial Of Service RCE +1
NVD
EPSS 1% CVSS 8.2
HIGH This Week

OS command injection in the EndRun Technologies Sonoma D12 GPS Network Time Server (firmware 6010-0071-000, Ver 4.00) lets remote attackers inject operating-system commands into the appliance, enabling arbitrary code execution, privilege escalation, disclosure of sensitive data, and disruption of the device's timing service. A third-party advisory (xdiv-sec) documents the issue, but no public exploit was identified at time of analysis and it is not listed in CISA KEV; EPSS is modest at 1.20% (64th percentile). Because this device supplies authoritative time to dependent infrastructure, compromise can cascade beyond the appliance itself.

Command Injection Denial Of Service RCE +1
NVD
EPSS 2% CVSS 9.9
CRITICAL Act Now

Authenticated command injection in EndRun Technologies Sonoma D12 GPS Network Time Server firmware (build 6010-0071-000, Ver 4.00) lets a low-privileged user inject OS commands that run on the underlying appliance, yielding arbitrary code execution, privilege escalation, information disclosure, and denial of service. The CVSS 3.1 vector (AV:N/AC:L/PR:L/S:C) shows a network-reachable, low-complexity flaw whose scope change lets a foothold on the management interface compromise the whole device. A third-party advisory (xdiv-sec) documents the issue; there is no public exploit identified and no CISA KEV listing at time of analysis, and EPSS is a modest 1.58% (73rd percentile).

Command Injection Denial Of Service RCE +1
NVD
EPSS 0% CVSS 8.0
HIGH This Week

Cross-site request forgery in the EndRun Technologies Sonoma D12 GPS Network Time Server (firmware 6010-0071-000 Ver 4.00) lets a remote attacker forge state-changing web requests that a logged-in operator's browser executes, chaining into arbitrary code execution, denial of service, privilege escalation, and disclosure of sensitive data on the appliance. Any organization relying on this GPS-disciplined NTP appliance for time synchronization is affected. No public exploit identified at time of analysis, though an independent research advisory (xdiv-sec) documenting the flaw has been published.

CSRF Denial Of Service RCE +1
NVD
EPSS 0% CVSS 1.9
LOW POC Monitor

Assimp 6.0.2 Q3D file parser mishandles resource allocation in the Q3DImporter::InternReadFile function, causing denial of service through uncontrolled memory consumption when processing malformed Q3D model files. A local authenticated attacker can trigger excessive memory allocation by providing a specially crafted Q3D file, leading to process crash or system resource exhaustion. Publicly available exploit code exists, though CVSS 1.9 and EPSS 0.03% indicate minimal real-world exploitation risk.

Denial Of Service Assimp
NVD GitHub VulDB
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