CVE-2026-85443

MOOS core-moos through 10.4.0 contains a denial of service vulnerability in MOOSCommServer::ListenLoop() where the accept thread performs a blocking receive without timeout during the wire-protocol handshake. An attacker can open a TCP connection to the MOOSDB port and send no data, causing the accept thread to block indefinitely while holding the socket-list lock, preventing all subsequent client connections.

• CWE-400

• https://github.com/themoos/core-moosProduct
• https://github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/Comms/MOOSCommServer.cpp#L922Issue Tracking, Patch
• https://github.com/themoos/core-moos/commit/8d940303949a850d4625eca2a60f27adee9c3ec4Issue Tracking, Patch
• https://github.com/themoos/core-moos/pull/83Issue Tracking, Patch
• https://www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-moosdb-accept-loop-denial-of-serviceThird Party Advisory

Published

Sep 3, 2026

Last Modified

Oct 14, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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