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.

CVSS

No CVSS.

References

Link	Resource
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

Configurations

No configuration.

History

17 Sep 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 18:16

Updated : 2026-09-24 21:20

NVD link : CVE-2026-52836

Mitre link : CVE-2026-52836

CVE.ORG link : CVE-2026-52836

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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