MOOS core-moos through 10.4.0 MOOSDB Accept Loop Denial of Service
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-85443
- 2026-10-03 Alias added: GHSA-qqc5-c4q6-4q3x
- 2026-10-30 EPSS moved to the 50th–90th percentile
References
More themoos Core-moos vulnerabilities
- TI-2026-58653 MOOS core-moos through 10.4.0 MOOSDB Out-of-Bounds Read via Short Packet CVSS 4.0HIGH 8.8
- TI-2026-58638 MOOS core-moos through 10.4.0 MOOSDB Pre-Authentication Heap Overflow via Negative Packet Length CVSS 4.0CRITICAL 9.3
- TI-2026-58626 MOOS core-moos through 10.4.0 MOOSDB HTTP Server Unauthenticated Variable Write CVSS 4.0CRITICAL 9.3
- TI-2026-58622 MOOS core-moos through 10.4.0 Missing Authentication for MOOSDB Publish, Subscribe and DB_CLEAR CVSS 4.0CRITICAL 9.3
- TI-2026-58648 MOOS core-moos through 10.4.0 MOOSDB HTTP Server Resource Exhaustion CVSS 4.0HIGH 8.7
- TI-2026-58640 MOOS core-moos through 10.4.0 MOOSDB Denial of Service via Unbounded Packet Allocation CVSS 4.0HIGH 8.7
Sources
- CVE-2026-85443 · CVE Program
- CVE-2026-85443 · NVD
- FIRST EPSS
- GHSA-qqc5-c4q6-4q3x · GitHub Advisory Database · CC BY 4.0
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