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 (36631)
DNG SDK versions 1.7.1 and earlier contain an integer overflow vulnerability that allows local attackers to crash affected applications through specially crafted files. Exploitation requires user interaction, as victims must open a malicious file to trigger the denial-of-service condition. No patch is currently available for this vulnerability.
Substance 3D Painter versions 11.1.2 and earlier contain a null pointer dereference that allows local attackers to crash the application by tricking users into opening malicious files. This denial-of-service vulnerability requires user interaction but requires no elevated privileges to exploit. No patch is currently available for this medium-severity issue.
Substance 3D Painter versions 11.1.2 and earlier contain a null pointer dereference that enables local denial-of-service attacks when users open specially crafted files. An attacker can crash the application to disrupt workflow, though exploitation requires user interaction and no patch is currently available. The vulnerability has a moderate CVSS score of 5.5 with zero percent estimated exploitation probability.
Substance 3D Painter versions 11.1.2 and earlier contain a null pointer dereference vulnerability that allows local attackers to crash the application by convincing users to open a malicious file. This denial-of-service impact disrupts application availability, though no patch is currently available. User interaction is required for exploitation, and the vulnerability affects local attack scenarios only.
Denial-of-service in Substance 3D Painter 11.1.2 and earlier stems from improper null pointer handling that crashes the application when processing malicious files. An attacker can trigger this crash by tricking a user into opening a specially crafted file, temporarily disrupting the victim's workflow. No patch is currently available to address this vulnerability.
Denial-of-service crashes in Adobe Substance 3D Painter versions 11.1.2 and earlier stem from a null pointer dereference vulnerability triggered when users open specially crafted files. An attacker can exploit this flaw to force application crashes and disrupt user workflows, though no patch is currently available. Exploitation requires social engineering to convince victims to open a malicious file.
Substance 3D Painter versions 11.1.2 and earlier contain a null pointer dereference vulnerability that allows local attackers to crash the application by tricking users into opening a malicious file. This denial-of-service condition disrupts workflow for affected users, though no patch is currently available. The vulnerability requires user interaction and does not enable code execution or data compromise.
iccDEV provides a set of libraries and tools for working with ICC color management profiles. versions up to 2.3.1.5 is affected by out-of-bounds read (CVSS 5.5).
iccDEV provides a set of libraries and tools for working with ICC color management profiles. versions up to 2.3.1.5 is affected by out-of-bounds read (CVSS 5.5).
iccDEV provides a set of libraries and tools for working with ICC color management profiles. versions up to 2.3.1.5 is affected by null pointer dereference (CVSS 7.8).
iccDEV provides a set of libraries and tools for working with ICC color management profiles. versions up to 2.3.1.5 is affected by use after free (CVSS 7.8).
StudioCMS prior to version 0.4.0 allows authenticated editors and above to revoke API tokens belonging to any user, including administrators and owners, due to insufficient authorization checks on the DELETE /studiocms_api/dashboard/api-tokens endpoint. An attacker with editor privileges can exploit this to disable critical integrations and automations by revoking tokens of higher-privileged accounts. No patch is currently available for affected versions.
Unauthenticated attackers can crash Parse Server instances by invoking Cloud Function endpoints with prototype property names, triggering infinite recursion and process termination. Additionally, attackers can bypass validation checks using prototype pollution techniques to elicit HTTP 200 responses for non-existent functions. All Parse Server versions prior to 8.6.13 and 9.5.1-alpha.2 are affected when the Cloud Function endpoint is exposed.
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally. [CVSS 7.8 HIGH]
Uncontrolled resource allocation in ASP.NET Core enables unauthenticated remote attackers to exhaust system resources and cause denial of service without requiring user interaction. The vulnerability affects .NET applications exposed to network access, allowing attackers to trigger unbounded resource consumption from any network location. A patch is available to address this issue.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. [CVSS 7.8 HIGH]
Unvalidated file path handling in SICAM SIAPP SDK versions below 2.1.7 permits local attackers to delete arbitrary files and sockets accessible to the application process, causing denial of service or service disruption. The vulnerability requires local access and specific conditions to exploit but carries no patching option currently. Organizations using affected SDK versions should implement access controls and monitor for unexpected file deletion activity until an update becomes available.
Stack overflow in SICAM SIAPP SDK versions prior to 2.1.7 allows local attackers to crash the server component by submitting oversized input that bypasses length validation, resulting in denial of service. The vulnerability stems from missing input length checks on certain variables processed by the SDK server. No patch is currently available for affected installations.
Stack overflow in SICAM SIAPP SDK versions below 2.1.7 results from missing input length validation on client-side variables, allowing local attackers to trigger denial of service by submitting oversized inputs that crash the affected process. The vulnerability requires local access and manual user interaction but carries no availability impact mitigation since no patch is currently available.
Insufficient input validation in SICAM SIAPP SDK versions prior to V2.1.7 enables stack overflow attacks, permitting local attackers to execute arbitrary code or trigger denial of service. The vulnerability affects all versions below the patched release, with no currently available remediation for deployed systems. Attackers with local access can leverage malformed input to corrupt the stack and gain code execution privileges.
Out-of-bounds write vulnerability in SICAM SIAPP SDK versions prior to V2.1.7 allows local attackers to corrupt memory and achieve arbitrary code execution or denial of service. The vulnerability requires local access and specific conditions to trigger, but no patch is currently available. Affected organizations using vulnerable SDK versions should immediately implement compensating controls or upgrade to V2.1.7 or later.
Privilege escalation in Windows DWM Core Library affects Windows 10 versions 21H2 and 1809 through a use-after-free memory corruption vulnerability that allows authenticated local attackers to gain system-level privileges. The vulnerability requires local access and valid user credentials but no user interaction, creating a significant risk for multi-user systems. No patch is currently available.
Windows Ancillary Function Driver for WinSock (AFD) in Windows 11 versions 24h2 and 26h1 contains a use-after-free vulnerability (CWE-416) that allows authenticated local attackers to escalate privileges through memory corruption. An attacker with local access could exploit this flaw to gain elevated system permissions, though no official patch is currently available.
Privilege escalation in Windows Authentication Methods (Windows 10 22H2, Windows 11 26H1) stems from a use-after-free memory vulnerability that allows authenticated local attackers to gain elevated system privileges. The flaw requires low user privileges and manual interaction but provides complete system compromise through code execution. No patch is currently available for this high-severity vulnerability.
Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally. [CVSS 7.0 HIGH]
Microsoft Graphics Component on Windows 10 21H2, Windows Server 2016, and Windows 11 25H2 is vulnerable to a null pointer dereference that enables local denial of service attacks. An attacker with local access can trigger the vulnerability without requiring elevated privileges or user interaction to crash the graphics component and render the system unavailable. No patch is currently available for this medium-severity vulnerability.
Privilege escalation in Microsoft's Brokering File System on Windows 11 (24h2 and 25h2) stems from a use-after-free vulnerability that allows local attackers to gain elevated system privileges. An attacker with local access can exploit memory corruption to execute arbitrary code with higher privileges, potentially compromising system integrity. No patch is currently available for this vulnerability.
Privilege escalation in Windows Performance Counters via null pointer dereference affects Windows Server 2019 and Windows 11 systems, enabling authenticated local attackers to gain elevated privileges. The vulnerability impacts systems where users have standard account access, allowing them to escalate to higher privilege levels on affected machines. No patch is currently available.
A NULL Pointer Dereference vulnerability [CWE-476] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4 all versions, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow an authenticated attacker to crash the HTTP daemon via crafted HTTP requests. [CVSS 2.7 LOW]
Privilege escalation in Windows Ancillary Function Driver for WinSock affects Windows 11 24H2, Windows Server 2022, and Windows Server 2025, allowing authenticated local attackers to gain system-level access through null pointer dereference. The vulnerability requires valid user credentials and local access but no user interaction to exploit. No patch is currently available.
Privilege escalation in Windows Connected Devices Platform Service (Cdpsvc) exploits a use-after-free memory vulnerability, affecting Windows 10 22h2 and Windows 11 (25h2, 26h1). An authenticated local attacker can leverage this flaw to gain system-level privileges on vulnerable systems. No patch is currently available for this high-severity vulnerability.
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally. [CVSS 7.8 HIGH]
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally. [CVSS 7.0 HIGH]
Remote code execution in Microsoft Windows Print Spooler Components via use-after-free memory corruption enables authenticated network attackers to execute arbitrary code with high privileges. The vulnerability requires valid credentials but no user interaction, presenting a significant risk to organizations where print services are accessible to untrusted internal or remote users. No patch is currently available.
CWE-404 Improper Resource Shutdown or Release vulnerability exists that could cause partial Denial of Service on Machine Expert protocol when an unauthenticated attacker sends malicious payload to occupy active communication channels.
Denial of service in a remote-enabled function module allows authenticated attackers to exhaust system resources by submitting requests with oversized loop parameters, rendering the affected system unavailable. The vulnerability requires valid user credentials and network access but no user interaction, making it exploitable by any authenticated user on the network. No patch is currently available to address this high-severity flaw.
SAP Business Warehouse Service API lacks proper authorization controls on RFC function modules, allowing authenticated attackers to modify configurations and disrupt request processing. An attacker with valid credentials could exploit this vulnerability to cause denial of service and alter system integrity without detection. No patch is currently available for this medium-severity vulnerability.
An issue pertaining to CWE-1333: Inefficient Regular Expression Complexity (4.19) was discovered in Sunbird-Ed SunbirdEd-portal v1.13.4. [CVSS 7.5 HIGH]
An issue pertaining to CWE-1333: Inefficient Regular Expression Complexity (4.19) was discovered in mscdex ssh2 v1.17.0. [CVSS 7.5 HIGH]
An issue pertaining to CWE-400: Uncontrolled Resource Consumption was discovered in Nexusoft NexusInterface v3.2.0-beta.2. [CVSS 7.5 HIGH]
An issue pertaining to CWE-400: Uncontrolled Resource Consumption was discovered in YMFE yapi v1.12.0 and allows attackers to cause a denial of service. [CVSS 7.5 HIGH]
GNU Binutils thru 2.45.1 readelf contains a denial-of-service vulnerability when processing a crafted binary with malformed DWARF .debug_rnglists data. [CVSS 6.2 MEDIUM]
GNU Binutils thru 2.45.1 readelf contains a denial-of-service vulnerability when processing a crafted binary with malformed DWARF loclists data. [CVSS 6.2 MEDIUM]
FreeBSD's blocklistd service leaks socket descriptors on each adverse event report, causing progressive service degradation until it can no longer block malicious IP addresses or process new reports. An attacker can exploit this by generating numerous fraudulent adverse events from disposable IP addresses to exhaust socket resources and disable the blocking mechanism before launching an actual attack. The vulnerability has a high severity rating (CVSS 7.5) and currently lacks a patch.
In some cases, the `tcp-setmss` handler may free the packet data and throw an error without halting the rule processing engine. A subsequent rule can then allow the traffic after the packet data is gone, resulting in a NULL pointer dereference. [CVSS 7.5 HIGH]
DefectDojo versions up to 2.55.4 contain a denial of service vulnerability in the SonarQubeParser and MSDefenderParser components where improper handling of ZIP file input allows authenticated remote attackers to crash the service. Public exploit code exists for this vulnerability, and administrators should upgrade to version 2.56.0 or later to remediate the issue.
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. [CVSS 7.5 HIGH]
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. [CVSS 7.5 HIGH]
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. [CVSS 7.5 HIGH]
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. [CVSS 7.5 HIGH]
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. [CVSS 7.5 HIGH]
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. [CVSS 7.5 HIGH]
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. [CVSS 7.5 HIGH]
In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed.. [CVSS 7.5 HIGH]
Delta Electronics COMMGR2 has Buffer Over-read DoS vulnerability. [CVSS 7.5 HIGH]
Crypt::Sodium::XS versions through 0.001000 for Perl has potential integer overflows. Combined aead encryption, combined signature creation, and bin2hex functions do not check that output size will be less than SIZE_MAX, which could lead to integer wraparound causing an undersized output buffer. [CVSS 7.5 HIGH]
A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsx_consumer::read_office_document of the file source/detail/serialization/xlsx_consumer.cpp of the component XLSX File Parser. [CVSS 3.3 LOW]
Sliver C2 server versions 1.7.3 and earlier can be remotely crashed by authenticated attackers who craft malformed Protobuf messages that exploit missing nil-pointer validation in the unmarshalling logic. Public exploit code exists for this vulnerability, which causes a denial of service affecting all active implant sessions across the entire infrastructure, as the mTLS, WireGuard, and DNS transports lack panic recovery mechanisms. An attacker with captured implant credentials can instantly terminate the server process, requiring manual intervention to restore operations.
Denial of service in Gravitl Netmaker prior to 1.2.0 allows any remote unauthenticated attacker to terminate the server process by calling the unprotected /api/server/shutdown endpoint, which issues a SIGINT to the running process. Because the service restarts in roughly three seconds, attackers can loop the request to sustain a cyclic outage of the WireGuard-based overlay network. No public exploit identified at time of analysis and EPSS is low (0.04%), but the trivial nature of the request makes opportunistic abuse plausible once exposure is known.
Remote denial of service in cpp-httplib prior to version 0.37.0 allows unauthenticated attackers to crash server processes by submitting HTTP POST requests with maliciously crafted RFC 5987 filename* parameters that trigger catastrophic backtracking in the regex parser. The vulnerability exploits the recursive stack-based implementation of libstdc++'s regex engine, causing uncontrolled stack growth and stack overflow. Public exploit code exists for this vulnerability.
dpkg-deb fails to properly validate zstd-compressed .deb archives during decompression, allowing unauthenticated remote attackers to trigger infinite loops that exhaust CPU resources on Debian systems. This denial of service condition affects the package management system without requiring user interaction or elevated privileges. No patch is currently available for this vulnerability.
Mercurius versions prior to 16.8.0 fail to validate GraphQL subscription query depth limits over WebSocket connections, allowing remote attackers to bypass depth restrictions that are properly enforced for HTTP queries. An attacker can exploit this to submit arbitrarily nested subscription queries that cause denial of service through exponential data resolution on schemas with recursive types. A patch is available in version 16.8.0.
DNS certificate verification can crash in systems handling X.509 certificate chains when processing certificates with empty DNS names paired with excluded name constraints, affecting applications performing direct certificate validation or using TLS. This denial of service condition requires no authentication or user interaction but depends on specific certificate chain configurations. No patch is currently available for this vulnerability.
Stellar-xdr prior to version 25.0.1 fails to validate string length constraints in the StringM::from_str function, allowing oversized strings to bypass maximum length checks and create invalid StringM objects. Applications relying on this type's length invariant for serialization, validation, or security decisions could process malformed data that violates expected constraints. Local attackers or malicious input sources could exploit this to cause unexpected behavior in dependent code.
A crafted JavaScript input executed with the QuickJS release 2025-09-13, fixed in commit fcd33c1afa7b3028531f53cd1190a3877454f6b3 (2025-12-11),`qjs` interpreter using the `-m` option and a low memory limit can cause an out-of-memory condition followed by an assertion failure in JS_FreeRuntime (list_empty(&rt->gc_obj_list)) during runtime cleanup. [CVSS 7.5 HIGH]
A crafted JavaScript input can trigger an internal assertion failure in QuickJS release 2025-09-13, fixed in commit 1dbba8a88eaa40d15a8a9b70bb1a0b8fb5b552e6 (2025-12-11), in file gc_decref_child in quickjs.c, when executed with the qjs interpreter using the -m option. [CVSS 6.5 MEDIUM]
GNU Binutils thru 2.46 readelf contains a vulnerability that leads to an abort (SIGABRT) when processing a crafted ELF binary with malformed DWARF abbrev or debug information. [CVSS 6.2 MEDIUM]
GNU Binutils thru 2.46 readelf contains a double free vulnerability when processing a crafted ELF binary with malformed relocation data. During GOT relocation handling, dump_relocations may return early without initializing the all_relocations array. [CVSS 7.5 HIGH]
GNU Binutils thru 2.46 readelf contains a vulnerability that leads to an invalid pointer free when processing a crafted ELF binary with malformed relocation or symbol data. If dump_relocations returns early due to parsing errors, the internal all_relocations array may remain partially uninitialized. [CVSS 5.5 MEDIUM]
Binutils objdump contains a denial-of-service vulnerability when processing a crafted binary with malformed DWARF debug_rnglists data. [CVSS 5.5 MEDIUM]
Binutils objdump contains a denial-of-service vulnerability when processing a crafted binary with malformed DWARF debug information. [CVSS 5.5 MEDIUM]
An issue was discovered in Binutils before 2.46. The objdump contains a denial-of-service vulnerability when processing a crafted binary with malformed debug information. [CVSS 5.0 MEDIUM]
Coredns versions up to 1.14.2 contains a vulnerability that allows attackers to crash the DNS server by sending specially crafted DNS queries (CVSS 7.5).
eToolz 3.4.8.0 contains a denial of service vulnerability that allows local attackers to crash the application by supplying oversized input buffers. Attackers can create a payload file containing 255 bytes of data that triggers a buffer overflow condition when processed by the application. [CVSS 6.2 MEDIUM]
Mongoose Web Server 6.9 contains a denial of service vulnerability that allows remote attackers to crash the service by establishing multiple socket connections. [CVSS 7.5 HIGH]
AMPPS 2.7 contains a denial of service vulnerability that allows remote attackers to crash the service by sending malformed data to the default HTTP port. Attackers can establish multiple socket connections and transmit invalid payloads to exhaust server resources and cause service unavailability. [CVSS 7.5 HIGH]
Denial of service in SVGO versions 2.1.0-2.8.0, 3.0.0-3.3.2, and before 4.0.1 allows unauthenticated attackers to crash the Node.js process through XML entity expansion attacks, with a minimal 811-byte payload triggering heap exhaustion. Public exploit code exists for this vulnerability, and no patch is currently available. Affected users of SVGO, Node.js, and Golang implementations should restrict input sources until updates are released.
Uncontrolled-recursion denial of service in FasterXML jackson-core 3.0.0 through 3.0.x lets a remote attacker crash JSON-processing services by submitting a deeply nested JSON document. The UTF8DataInputJsonParser (DataInput sources) and ReaderBasedJsonParser fail to enforce the StreamReadConstraints maxNestingDepth limit (default 500), so excessive nesting drives a StackOverflowError. No public exploit identified at time of analysis and EPSS is low (0.06%), but the bug is trivially triggerable against any service that parses untrusted JSON with these parsers; fixed in 3.1.0.
Melange versions 0.40.5 and earlier are vulnerable to disk exhaustion when the update-cache function downloads files from attacker-controlled URIs without enforcing size limits or timeouts. An attacker can craft a malicious melange configuration file to trigger unbounded disk writes on build systems, consuming all available storage and denying service to legitimate builds. No patch is currently available.
Prototype pollution in oRPC before 1.13.6. PoC and patch available.
Markus versions up to 2.9.4 is affected by improper restriction of recursive entity references in dtds (CVSS 4.9).
Acronis Cyber Protect 17 on Linux and Windows versions prior to build 41186 is vulnerable to denial of service through improper input validation in authentication logging functions. An unauthenticated remote attacker can crash the application or render it unavailable without requiring user interaction. No patch is currently available for this vulnerability.
Openclaw versions up to 2026.2.14 is affected by allocation of resources without limits or throttling (CVSS 5.5).
Openclaw versions up to 2026.2.14 is affected by allocation of resources without limits or throttling (CVSS 7.5).
OpenClaw versions up to 2026.2.13 is affected by allocation of resources without limits or throttling (CVSS 7.5).
Arbitrary file write in OpenClaw prior to version 2026.2.12 allows authenticated gateway clients to bypass path validation on the sessionFile parameter and write transcript data to any location on the host filesystem. An attacker with valid credentials can repeatedly append data to arbitrary files, potentially corrupting configurations or exhausting disk space to cause denial of service. A patch is available.
Openclaw versions up to 2026.2.14 is affected by allocation of resources without limits or throttling (CVSS 5.5).
OpenClaw versions before 2026.2.1 fail to properly validate access controls in the Twitch plugin when role restrictions are not configured, allowing unauthenticated remote attackers to trigger agent dispatch through Twitch chat mentions. Public exploit code exists for this vulnerability, enabling attackers to invoke the agent pipeline and potentially cause unintended actions or resource exhaustion. Organizations running affected versions with the Twitch plugin enabled should apply the available patch immediately.
Openclaw versions up to 2026.2.15 is affected by allocation of resources without limits or throttling (CVSS 6.5).
OliveTin versions prior to 3000.11.0 suffer from broken access control allowing unauthenticated users to invoke the KillAction RPC endpoint and terminate running shell command executions, bypassing authentication restrictions. Public exploit code exists for this vulnerability, enabling remote denial of service attacks against legitimate administrative actions. The vulnerability affects OliveTin deployments regardless of authentication settings and has been remediated in version 3000.11.0 and later.