Is CVE-2026-85443 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-85443?

CVE-2026-85443 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-85443

Description

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.