Denial of Service
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 (39999)
Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a Denial of Service (DoS) vulnerability was identified in the "Languages" submenu of the Grav admin configuration panel (/admin/config/system). Specifically, the Supported parameter fails to properly validate user input. If a malformed value is inserted-such as a single forward slash (/) or an XSS test string-it causes a fatal regular expression parsing error on the server. This leads to application-wide failure due to the use of the preg_match() function with an improperly constructed regular expression, resulting in an error. Once triggered, the site becomes completely unavailable to all users. This vulnerability is fixed in 1.8.0-beta.27.
Grav is a file-based Web platform. Prior to 1.8.0-beta.27, A Denial of Service (DoS) vulnerability has been identified in Grav related to the handling of scheduled_at parameters. Specifically, the application fails to properly sanitize input for cron expressions. By manipulating the scheduled_at parameter with a malicious input, such as a single quote, the application admin panel becomes non-functional, causing significant disruptions to administrative operations. The only way to recover from this issue is to manually access the host server and modify the backup.yaml file to correct the corrupted cron expression. This vulnerability is fixed in 1.8.0-beta.27.
A use-after-free in the MPEG1or2Demux::newElementaryStream() function of Live555 Streaming Media v2018.09.02 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MPEG Program stream.
Uncontrolled memory allocation in Python's plistlib module allows a crafted binary plist file to cause out-of-memory (OOM) exhaustion in any Python process that parses it. The module reads data blocks sized according to values embedded in the plist file itself, with no cap or validation against actual available data; a malicious file can specify sizes up to 2^64 bytes, triggering allocations that exhaust process or system memory. Affected CPython versions span all major release lines prior to the fixed releases (3.10.20, 3.11.15, 3.12.13, 3.13.10, 3.14.1, 3.15.0a3); no public exploit or CISA KEV listing exists, and EPSS is extremely low at 0.03%.
Unbounded memory allocation in CPython's http.client module allows any HTTP server the client connects to-whether malicious, compromised, or MITM-intercepted-to exhaust the client process's memory by advertising an arbitrarily large Content-Length header, triggering MemoryError exceptions, OOM-killed processes or containers, swap exhaustion, or system crashes. All active CPython 3.x branches are affected: 3.10 through 3.14.x and pre-release 3.15 builds. When a Python application calls response.read() without specifying a byte limit, the legacy _safe_read() implementation issued a single read() call sized to the full server-declared Content-Length, causing catastrophic single-shot allocation. No public exploit has been identified and EPSS is 0.15%.
NULL Pointer Dereference vulnerability in Avast Antivirus on MacOS, Avast Anitvirus on Linux when scanning a malformed Windows PE file causes the antivirus process to crash.This issue affects Antivirus: 16.0.0; Anitvirus: 3.0.3.
A NULL pointer dereference in the ADTSAudioFileServerMediaSubsession::createNewRTPSink() function of Live555 Streaming Media v2018.09.02 allows attackers to cause a Denial of Service (DoS) via supplying a crafted ADTS file.
A heap overflow in the MatroskaFile::createRTPSinkForTrackNumber() function of Live555 Streaming Media v2018.09.02 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MKV file.
A use-after-free in the ADTSAudioFileSource::samplingFrequency() function of Live555 Streaming Media v2018.09.02 allows attackers to cause a Denial of Service (DoS) via supplying a crafted ADTS/AAC file.
A buffer overflow in the getSideInfo2() function of Live555 Streaming Media v2018.09.02 allows attackers to cause a Denial of Service (DoS) via a crafted MP3 stream.
A buffer overflow in the g_cfg.MaxUsers component of LightFTP v2.0 allows attackers to cause a Denial of Service (DoS) via a crafted input.
Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaustion. This issue affects Apache Struts: from 2.0.0 through 6.7.0, from 7.0.0 through 7.0.3. Users are recommended to upgrade to version 6.8.0 or 7.1.1, which fixes the issue.
Improper input validation in the BitstreamWriter::write_bits() function of Tempus Ex hello-video-codec v0.1.0 allows attackers to cause a Denial of Service (DoS) via a crafted input.
A denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP USB Function functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted network packet can lead to a denial of service. An attacker can send an unauthenticated packet to trigger this vulnerability.This vulnerability is specific to the malicious message sent via Modbus RTU over TCP on port 503.
A denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP USB Function functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted network packet can lead to a denial of service. An attacker can send an unauthenticated packet to trigger this vulnerability.This vulnerability is specific to the malicious message sent via Modbus TCP over port 502.
A denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted series of network requests can lead to a denial of service. An attacker can send a sequence of unauthenticated packets to trigger this vulnerability.An attacker can trigger this denial-of-service condition by sending a single Modbus TCP message to port 503 using the Write Single Register function code (6) to write the value 1 to register 4352. This action changes the Modbus address to 15. After this message is sent, the device will be in a denial-of-service state.
A denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted series of network requests can lead to a denial of service. An attacker can send a sequence of unauthenticated packets to trigger this vulnerability.An attacker can trigger this denial-of-service condition by sending a sequence of Modbus RTU over TCP messages to port 503 using the Write Single Register function code (6). The attack sequence begins with a message to register 58112 with a value of 1000, indicating that a configuration change will follow. Next, a message is sent to register 29440 with a value corresponding to the new Modbus address to be configured. Finally, a message to register 57856 with a value of 161 commits the configuration change. After this configuration change, the device will be in a denial-of-service state.
A denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted series of network requests can lead to a denial of service. An attacker can send a sequence of unauthenticated packets to trigger this vulnerability.An attacker can trigger this denial-of-service condition by sending a single Modbus TCP message to port 502 using the Write Single Register function code (6) to write the value 1 to register 4352. This action changes the Modbus address to 15. After this message is sent, the device will be in a denial-of-service state.
A denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted series of network requests can lead to a denial of service. An attacker can send a sequence of unauthenticated packets to trigger this vulnerability.An attacker can trigger this denial-of-service condition by sending a sequence of Modbus TCP messages to port 502 using the Write Single Register function code (6). The attack sequence begins with a message to register 58112 with a value of 1000, indicating that a configuration change will follow. Next, a message is sent to register 29440 with a value corresponding to the new Modbus address to be configured. Finally, a message to register 57856 with a value of 161 commits the configuration change. After this configuration change, the device will be in a denial-of-service state.
A buffer overflow vulnerability exists in the Modbus TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted set of network packets can lead to denial of service. An attacker can send a sequence of unauthenticated packets to trigger this vulnerability.
A denial of service vulnerability exists in the Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted network packet can lead to denial of service. An attacker can send an unauthenticated packet to trigger this vulnerability.
A denial of service vulnerability exists in the Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted network packet can lead to denial of service and weaken credentials resulting in default documented credentials being applied to the device. An attacker can send an unauthenticated packet to trigger this vulnerability.
A heap-based buffer overflow in Avast Antivirus for macOS when processing crafted Mach-O files allows a local attacker to execute arbitrary code or disable antivirus protection. The vulnerability requires user interaction to open a malicious file. No public exploit code has been identified, and EPSS indicates low exploitation probability.
A denial of service vulnerability exists in the Modbus TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted network packet can lead to denial of service and weaken credentials resulting in default documented credentials being applied to the device. An attacker can send an unauthenticated packet to trigger this vulnerability.
A denial of service vulnerability exists in the Modbus TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted network packet can lead to denial of service. An attacker can send an unauthenticated packet to trigger this vulnerability.
An authenticated Zabbix user (including Guest) is able to cause disproportionate CPU load on the webserver by sending specially crafted parameters to /imgstore.php, leading to potential denial of service.
Software installed and run as a non-privileged user may conduct improper GPU system calls to trigger reads of stale data that can lead to kernel exceptions and write use-after-free. The Use After Free common weakness enumeration was chosen as the stale data can include handles to resources in which the reference counts can become unbalanced. This can lead to the premature destruction of a resource while in use.
Use After Free vulnerability in Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user process to perform improper GPU processing operations to gain access to already freed memory.This issue affects Valhall GPU Kernel Driver: from r53p0 through r54p1; Arm 5th Gen GPU Architecture Kernel Driver: from r53p0 through r54p1.
Use After Free vulnerability in Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user process to perform improper GPU memory processing operations to gain access to already freed memory.This issue affects Valhall GPU Kernel Driver: from r53p0 through r54p1; Arm 5th Gen GPU Architecture Kernel Driver: from r53p0 through r54p1.
Uncontrolled recursion in the json2pb component in Apache bRPC (version < 1.15.0) on all platforms allows remote attackers to make the server crash via sending deep recursive json data. Root Cause: The bRPC json2pb component uses rapidjson to parse json data from the network. The rapidjson parser uses a recursive parsing method by default. If the input json has a large depth of recursive structure, the parser function may run into stack overflow. Affected Scenarios: Use bRPC server with protobuf message to serve http+json requests from untrusted network. Or directly use JsonToProtoMessage to convert json from untrusted input. How to Fix: (Choose one of the following options) 1. Upgrade bRPC to version 1.15.0, which fixes this issue. 2. Apply this patch: https://github.com/apache/brpc/pull/3099 Note: No matter which option you choose, you should know that the fix introduces a recursion depth limit with default value 100. It affects these functions: ProtoMessageToJson, ProtoMessageToProtoJson, JsonToProtoMessage, and ProtoJsonToProtoMessage. If your requests contain json or protobuf messages that have a depth exceeding the limit, the request will be failed after applying the fix. You can modify the gflag json2pb_max_recursion_depth to change the limit.
An unauthenticated remote attacker, who beats a race condition, can exploit a flaw in the communication servers of the CODESYS Control runtime system on Linux and QNX to trigger an out-of-bounds read via crafted socket communication, potentially causing a denial of service.
In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
In modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
In dpc modem, there is a possible system crash due to null pointer dereference. This could lead to remote denial of service with no additional execution privileges needed
In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
AIS-catcher is a multi-platform AIS receiver. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Rated medium severity (CVSS 5.1), this vulnerability is no authentication required. Public exploit code available.
ClipBucket v5 is an open source video sharing platform. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Out-of-bounds memory operations in org.lz4:lz4-java 1.8.0 and earlier allow remote attackers to cause denial of service and read adjacent memory via untrusted compressed input. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Netskope was notified about a potential gap in its agent (NS Client) on Windows systems. Rated medium severity (CVSS 5.9), this vulnerability is low attack complexity. No vendor patch available.
Denial of service (DoS) vulnerability in the office service. Rated medium severity (CVSS 5.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Improper Input Validation vulnerability in CyberArk CyberArk Secure Web Sessions Extension on Chrome, Edge allows Denial of Service when trying to starting new SWS sessions.2.30305. Rated medium severity (CVSS 4.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A vulnerability in Automated Logic and Carrier's Zone Controller via BACnet protocol causes the device to crash. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Allocation of Resources Without Limits vulnerability could allow attackers to exhaust system resources through uncontrolled allocation.
BACnet Test Server versions up to and including 1.01 contains a remote denial of service vulnerability in its BACnet/IP BVLC packet handling. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 8.3 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that could have allowed an authenticated user with specific. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that could have allowed an unauthenticated user to cause a. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
BPv7 dissector crash in Wireshark 4.6.0 allows denial of service. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
An out-of-bound write can lead to an arbitrary code execution. Rated high severity (CVSS 7.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Valibot helps validate data using a schema. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Infinite Loop Denial of Service via Failed File Deletion in DB Electronica Telecomunicazioni S.p.A. Rated high severity (CVSS 8.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
pypdf is a free and open-source pure-python PDF library. Rated medium severity (CVSS 6.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
VictoriaMetrics is a scalable solution for monitoring and managing time series data. Rated low severity (CVSS 2.7), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
An issue was discovered in Veal98 Echo Open-Source Community System 2.2 thru 2.3 allowing an unauthenticated attacker to cause the server to send email verification messages to arbitrary users via. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability in OpenSearch allows attackers to cause Denial of Service (DoS) by submitting complex query_string inputs.0.0 and < 3.3.0 and OpenSearch < 2.19.4. Rated high severity (CVSS 8.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
NVIDIA NeMo Agent Toolkit UI for Web contains a vulnerability in the chat API endpoint where an attacker may cause a Server-Side Request Forgery. Rated high severity (CVSS 7.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
NVIDIA DGX Spark GB10 contains a vulnerability in SROOT firmware, where an attacker could cause a NULL pointer dereference. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
NVIDIA DGX Spark GB10 contains a vulnerability in SROOT firmware, where an attacker could cause unexpected memory buffer operations. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. No vendor patch available.
NVIDIA DGX Spark GB10 contains a vulnerability in SROOT firmware, where an attacker could cause improper processing of input data. Rated medium severity (CVSS 5.7), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
NVIDIA DGX Spark GB10 contains a vulnerability in SROOT firmware, where an attacker could cause an arbitrary memory read. Rated medium severity (CVSS 5.7), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
NVIDIA DGX Spark GB10 contains a vulnerability in OSROOT firmware, where an attacker could cause an invalid memory read. Rated medium severity (CVSS 5.7), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
NVIDIA DGX Spark GB10 contains a vulnerability in SROOT firmware where an attacker could cause an out-of-bound write. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
NVIDIA DGX Spark GB10 contains a vulnerability in SROOT firmware, where an attacker could cause an out-of-bound write. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
NVIDIA DGX Spark GB10 contains a vulnerability in hardware resources where an attacker could tamper with hardware controls. Rated high severity (CVSS 8.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
NVIDIA DGX Spark GB10 contains a vulnerability in SROOT, where an attacker could use privileged access to gain access to SoC protected areas. Rated critical severity (CVSS 9.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A user with access to the cluster with a limited set of privilege actions may be able to terminate queries that are being executed by other users. Rated low severity (CVSS 2.3), this vulnerability is remotely exploitable. No vendor patch available.
Improper input validation within AMD uprof can allow a local attacker to write to an arbitrary physical address, potentially resulting in crash or denial of service. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Improper input validation within AMD uProf can allow a local attacker to write out of bounds, potentially resulting in a crash or denial of service. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Improper input validation within the XOCL driver may allow a local attacker to generate an integer overflow condition, potentially resulting in crash or denial of service. Rated high severity (CVSS 7.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
body-parser 2.2.0 is vulnerable to denial of service due to inefficient handling of URL-encoded bodies with very large numbers of parameters. Rated medium severity (CVSS 5.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in Free5GC v4.0.0 and v4.0.1 allowing an attacker to cause a denial of service via crafted POST request to the Nnssf_NSSAIAvailability API. 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.
An issue was discovered in Free5GC v4.0.0 and v4.0.1 allowing an attacker to cause a denial of service via the Nudm_SubscriberDataManagement API. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
An issue was discovered in Free5GC v4.0.0 and v4.0.1 allowing an attacker to cause a denial of service via crafted POST request to the Npcf_BDTPolicyControl API. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Local privilege-holders can crash the Linux kernel through the Bluetooth Management (MGMT) interface, where the set_mesh_sync handler performs a memcpy against an improperly declared on-stack flexible array, triggering a KASAN-detected stack-out-of-bounds access. A companion defect in set_mesh_complete() causes a double list_del (via mgmt_pending_valid followed by mgmt_pending_remove), corrupting kernel list state. There is no public exploit identified at time of analysis, EPSS is negligible (0.03%), and the flaw is not on CISA KEV; it is fixed in the mainline/stable Bluetooth mesh code.
Use after free in endpoint destructors in Redboltz async_mqtt 10.2.5 allows local users to cause a denial of service via triggering SSL initialization failure that results in incorrect destruction. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.
Null pointer dereference in add_ca_certs() in Cesanta Mongoose before 7.2 allows remote attackers to cause a denial of service via TLS initialization where SSL_CTX_get_cert_store() returns NULL. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Null pointer dereference in coap_dtls_info_callback() in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where SSL_get_app_data() returns NULL. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Array index error in tls_verify_call_back() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.