CVE-2026-52836

OpenDDS is an open source C++ implementation of the Object Management Group (OMG) Data Distribution Service (DDS). Prior to 3.34.0, a network attacker can crash a reachable OpenDDS participant by sending a malformed RTPS UDP submessage whose crafted length or sequence-number state causes dds/DCPS/transport/rtps_udp/RtpsUdpReceiveStrategy.cpp in RtpsUdpReceiveStrategy::handle_input() to advance ACE_Message_Block::rd_ptr() beyond valid data. The parser can then call dds/DCPS/transport/rtps_udp/RtpsSampleHeader.cpp in RtpsSampleHeader::init(), which dereferences the invalid read pointer without first validating it against wr_ptr() or ensuring that a complete submessage header remains. The resulting SIGSEGV occurs in the receive thread, terminates the DDS process, and destroys the DDS entities hosted by that participant. No authentication, prior protocol state, or victim interaction is required. This issue is fixed in version 3.34.0.

• CWE-125

• https://github.com/OpenDDS/OpenDDS/commit/3ded3341e89db88e4c4e09d5153e05730b0a84ce
• https://github.com/OpenDDS/OpenDDS/commit/b46382ebc50d46f933ad6c860a396bffa97adbd7
• https://github.com/OpenDDS/OpenDDS/commit/d6bdddde9ee07f9ee0b461680e5fb64f95cd1251
• https://github.com/OpenDDS/OpenDDS/commit/e5aee3f5b18ee7174d66c3e7818270e1ba2cc2fa
• https://github.com/OpenDDS/OpenDDS/pull/5210
• https://github.com/OpenDDS/OpenDDS/releases/tag/v3.34.0
• https://github.com/OpenDDS/OpenDDS/security/advisories/GHSA-wcr7-gccq-vv56

Published

Sep 17, 2026

Last Modified

Sep 24, 2026

Status

Awaiting Analysis

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-52830fast-mcp-telegram is a Telegram MCP Server. Prior to 0.19.1,…9.4
• CVE-2026-52831Nuclio is a "Serverless" framework for Real-Time Events and …8
• CVE-2026-52832Nuclio is a "Serverless" framework for Real-Time Events and …4.9
• CVE-2026-52833Nuclio is a "Serverless" framework for Real-Time Events and …8
• CVE-2026-52834jxl-oxide is a pure Rust implementation of a JPEG XL decoder…7.3
• CVE-2026-52835Tautulli is a Python based monitoring and tracking tool for …7
• CVE-2026-52837Easy!Appointments is a self hosted appointment scheduler. In…6.9
• CVE-2026-52838Easy!Appointments is a self hosted appointment scheduler. Ve…2.6
• CVE-2026-52839Easy!Appointments is a self hosted appointment scheduler. Ve…3.3
• CVE-2026-5284Use after free in Dawn in Google Chrome prior to 146.0.7680.…7.5
• CVE-2026-52840Easy!Appointments is a self hosted appointment scheduler. In…2.7
• CVE-2026-52841Easy!Appointments is a self hosted appointment scheduler. In…3.1