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 (40207)
An issue in the firmware update process of TP-Link TL-WR941ND V2/V3 up to 3.13.9 and TL-WR941ND V4 up to 3.12.8 allows attackers to execute arbitrary code or cause a Denial of Service (DoS) via. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in the firmware update process of TP-Link TL-WA7510N v1 v3.12.6 and earlier allows attackers to execute arbitrary code or cause a Denial of Service (DoS) via uploading a crafted firmware. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
An exploitable firmware modification vulnerability was discovered on TP-Link TL-WR743ND V1. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
TP-Link TL-WR740N V1 and V2 v3.12.4 and earlier allows authenticated attackers to execute arbitrary code or cause a Denial of Service (DoS) via uploading a crafted firmware image during the firmware. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable. No vendor patch available.
TP-Link TL-WR1043ND V1 3.13.15 and earlier allows authenticated attackers to execute arbitrary code or cause a Denial of Service (DoS) via uploading a crafted firmware image during the firmware. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable. No vendor patch available.
An exploitable firmware modification vulnerability was discovered on the Netgear XWN5001 Powerline 500 WiFi Access Point. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
An exploitable firmware modification vulnerability was discovered on the Netgear WNR2000v1 router. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
An issue in Netgear WNR2000 v1 1.2.3.7 and earlier allows authenticated attackers to cause a Denial of Service (DoS) via uploading a crafted firmware image during the firmware update process. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable. No vendor patch available.
TP-Link TL-WR940N V4 3.16.9 and earlier allows authenticated attackers to cause a Denial of Service (DoS) via uploading a crafted firmware image during the firmware update process. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
D-Link devices DAP-2310 v2.10rc036 and earlier, DAP-2330 v1.06rc020 and earlier, DAP-2360 v2.10rc050 and earlier, DAP-2553 v3.10rc031 and earlier, DAP-2660 v1.15rc093 and earlier, DAP-2690 v3.20rc106. 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.
IBM Financial Transaction Manager for SWIFT Services for Multiplatforms 3.2.4 could allow an authenticated user to lock additional RM authorizations, resulting in a denial of service on displaying or. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
All versions of package lite-server are vulnerable to Denial of Service (DoS) when an attacker sends an HTTP request and includes control characters that the decodeURI() function is unable to parse. 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.
The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) is unresponsive with ConReqTimeoutZero. Rated high severity (CVSS 7.5), this vulnerability is no authentication required. Public exploit code available and no vendor patch available.
Improper Check for Unusual or Exceptional Conditions vulnerability handling requests in Apache Traffic Server allows an attacker to crash the server under certain conditions.0.0 through 9.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in the libsofia-sip fork in drachtio-server before 0.8.19. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
An issue was discovered in the libsofia-sip fork in drachtio-server before 0.8.20. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
An issue was discovered in drachtio-server before 0.8.20. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
In mmu_map_for_fw of gs_ldfw_load.c, there is a possible mitigation bypass due to Permissive Memory Allocation. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
In cd_SsParseMsg of cd_SsCodec.c, there is a possible crash due to a missing null check. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In ServiceInterface::HandleRequest of serviceinterface.cpp, there is a possible use after free. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
In the Pixel camera driver, there is a possible use after free due to a logic error in the code. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
In extract_metadata of dm-android-verity.c, there is a possible way to corrupt kernel memory due to a use after free. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity.
In (TBD) of (TBD), there is a possible way to corrupt kernel memory due to a use after free. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. Rated medium severity (CVSS 6.4).
In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
In TBD of aud_hal_tunnel.c, there is a possible memory corruption due to a use after free. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
In removeEventHubDevice of InputDevice.cpp, there is a possible OOB read due to a use after free. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity.
In btif_a2dp_sink_command_ready of btif_a2dp_sink.cc, there is a possible out of bounds read due to a use after free. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
In bindArtworkAndColors of MediaControlPanel.java, there is a possible way to crash the phone due to improper input validation. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
In multiple locations, there is a possible display crash loop due to improper input validation. Rated low severity (CVSS 2.3), this vulnerability is low attack complexity.
In SurfaceFlinger::doDump of SurfaceFlinger.cpp, there is possible arbitrary code execution due to a use after free. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
In compose of Vibrator.cpp, there is a possible arbitrary code execution due to a use after free. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
In sdpu_find_most_specific_service_uuid of sdp_utils.cc, there is a possible way to crash Bluetooth due to a missing null check. Rated medium severity (CVSS 5.0), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
In acquireFabricatedOverlayIterator, nextFabricatedOverlayInfos, and releaseFabricatedOverlayIterator of Idmap2Service.cpp, there is a possible out of bounds write due to a use after free. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity.
An issue was discovered in the FFmpeg package, where vp3_decode_frame in libavcodec/vp3.c lacks check of the return value of av_malloc() and will cause a null pointer dereference, impacting. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
BigBlueButton is an open source web conferencing system. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A use after free issue was addressed with improved memory management. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Helm is a tool for managing Charts, pre-configured Kubernetes resources. 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.
Helm is a tool for managing Charts, pre-configured Kubernetes resources. 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.
Helm is a tool for managing Charts, pre-configured Kubernetes resources. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in the Linux kernel through 5.16-rc6. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
An issue was discovered in the Linux kernel through 5.16-rc6. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
An issue was discovered in the Linux kernel through 5.16-rc6. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
An issue was discovered in the Linux kernel through 5.16-rc6. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
An issue was discovered in the Linux kernel through 5.16-rc6. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
An issue was discovered in the Linux kernel through 5.16-rc6. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
An issue was discovered in the Linux kernel through 5.16-rc6. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
An issue was discovered in the Linux kernel through 5.16-rc6. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
An issue was discovered in the Linux kernel through 5.16-rc6. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
An issue was discovered in the Linux kernel through 5.16-rc6. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
The MsIo64.sys component in Asus Aura Sync through v1.07.79 does not properly validate input to IOCTL 0x80102040, 0x80102044, 0x80102050, and 0x80102054, allowing attackers to trigger a memory. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in Profiles in Google Chrome prior to 108.0.5359.124 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in Aura in Google Chrome on Windows prior to 108.0.5359.124 allowed a remote attacker who convinced the user to engage in specific UI interactions to potentially exploit heap. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in Blink Frames in Google Chrome prior to 108.0.5359.124 allowed a remote attacker who convinced the user to engage in specific UI interactions to potentially exploit heap corruption. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in Mojo IPC in Google Chrome prior to 108.0.5359.124 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in Blink Media in Google Chrome prior to 108.0.5359.124 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Windows Kernel Denial of Service Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Windows Hyper-V Denial of Service Vulnerability. Rated medium severity (CVSS 6.8), this vulnerability is low attack complexity. No vendor patch available.
A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (HSR) (All versions < V3.2.7), SCALANCE. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Uncontrolled Resource Consumption vulnerability could allow attackers to cause denial of service by exhausting system resources.
A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (HSR) (All versions < V3.2.7), SCALANCE. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Uncontrolled Resource Consumption vulnerability could allow attackers to cause denial of service by exhausting system resources.
A vulnerability has been identified in SIPROTEC 5 6MD84 (CP300) (All versions < V9.50), SIPROTEC 5 6MD85 (CP200) (All versions), SIPROTEC 5 6MD85 (CP300) (All versions < V9.50), SIPROTEC 5 6MD86. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in SICAM PAS/PQS (All versions < V7.0), SICAM PAS/PQS (All versions >= 7.0 < V8.06). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
A vulnerability has been identified in JT2Go (All versions < V14.1.0.6), Teamcenter Visualization V13.2 (All versions < V13.2.0.12), Teamcenter Visualization V13.3 (All versions < V13.3.0.8),. Rated low severity (CVSS 3.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in JT2Go (All versions < V14.1.0.6), Teamcenter Visualization V13.2 (All versions < V13.2.0.12), Teamcenter Visualization V13.3 (All versions < V13.3.0.8),. Rated low severity (CVSS 3.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in JT2Go (All versions < V14.1.0.6), Teamcenter Visualization V13.2 (All versions < V13.2.0.12), Teamcenter Visualization V13.3 (All versions < V13.3.0.8),. Rated low severity (CVSS 3.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in JT2Go (All versions < V14.1.0.6), Teamcenter Visualization V13.2 (All versions < V13.2.0.12), Teamcenter Visualization V13.3 (All versions < V13.3.0.8),. Rated low severity (CVSS 3.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in JT2Go (All versions < V14.1.0.6), Teamcenter Visualization V13.2 (All versions < V13.2.0.12), Teamcenter Visualization V13.3 (All versions < V13.3.0.8),. Rated low severity (CVSS 3.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Transient DOS due to loop with unreachable exit condition in WLAN while processing an incoming FTM frames. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The vCenter Server contains a denial-of-service vulnerability in the content library service. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Denial of service in modem due to reachable assertion while processing reconfiguration message in Snapdragon Auto, Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Denial of service in Modem due to reachable assertion while processing the common config procedure in Snapdragon Auto, Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Denial of service in Modem due to reachable assertion while processing SIB1 with invalid SCS and bandwidth settings in Snapdragon Mobile. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Denial of service in Modem due to reachable assertion in Snapdragon Mobile. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Denial of service in Modem module due to improper authorization while error handling in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile,. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Memory corruption in diag due to use after free while processing dci packet in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
Denial of service due to reachable assertion in modem while processing filter rule from application client in Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Denial of service in MODEM due to reachable assertion while processing configuration from network in Snapdragon Mobile. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Denial of service in MODEM due to reachable assertion while processing SIB1 with invalid Bandwidth in Snapdragon Mobile. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In GetResolvedMethod of entrypoint_utils-inl.h, there is a possible use after free due to a stale cache. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
In loadFromXml of ShortcutPackage.java, there is a possible crash on boot due to an uncaught exception. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
In setDataSource of initMediaExtractor.cpp, there is a possibility of arbitrary code execution due to a use after free. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
In NotificationChannel of NotificationChannel.java, there is a possible failure to persist permissions settings due to resource exhaustion. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
In NotificationChannel of NotificationChannel.java, there is a possible failure to persist permissions settings due to resource exhaustion. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
In NotificationChannel of NotificationChannel.java, there is a possible failure to persist permissions settings due to resource exhaustion. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
In NotificationChannel of NotificationChannel.java, there is a possible failure to persist permissions settings due to resource exhaustion. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.