CVE-2026-52836
Severity not reportedOpenDDS is an open source C++ implementation of the Object Management Group (OMG) Data Distribution Service (DDS).
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.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/OpenDDS/OpenDDS/commit/3ded3341e89db88e4c4e09d5153e05730b0a84ce security-advisories@github.com
- https://github.com/OpenDDS/OpenDDS/commit/b46382ebc50d46f933ad6c860a396bffa97adbd7 security-advisories@github.com
- https://github.com/OpenDDS/OpenDDS/commit/d6bdddde9ee07f9ee0b461680e5fb64f95cd1251 security-advisories@github.com
- https://github.com/OpenDDS/OpenDDS/commit/e5aee3f5b18ee7174d66c3e7818270e1ba2cc2fa security-advisories@github.com
- https://github.com/OpenDDS/OpenDDS/pull/5210 security-advisories@github.com
- https://github.com/OpenDDS/OpenDDS/releases/tag/v3.34.0 security-advisories@github.com
- https://github.com/OpenDDS/OpenDDS/security/advisories/GHSA-wcr7-gccq-vv56 security-advisories@github.com