CVE-2026-85442: Memory Allocation with Excessive Size Value in themoos core-moos
Description
MOOS core-moos through 10.4.0 fails to validate packet length declarations in CMOOSCommPkt::OnBytesWritten(), allowing unauthenticated attackers to trigger unbounded buffer allocation by sending crafted wire packets. Attackers can send packets with large declared lengths to exhaust server memory and cause denial of service before client authentication completes.
CVSS v4.0
Score 8.7high
Affected software
themoos
core-moos
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Themoos core-moos versions through 10.4.0 contain a vulnerability in the CMOOSCommPkt::OnBytesWritten() function where packet length declarations are not properly validated. This flaw permits unauthenticated attackers to send specially crafted wire packets with excessively large length values, triggering unbounded memory allocation. The resulting memory exhaustion can cause a denial of service condition on the server prior to client authentication completion.
Potential Impact
Attackers can cause denial of service by exhausting server memory resources through sending crafted packets with large declared lengths. This occurs before client authentication, potentially allowing disruption without requiring credentials or prior access.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Until a patch is available, consider limiting exposure of the affected service to untrusted networks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-03T19:50:58.488Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a99fa4cacd9273b4994b27a
Added to database: 09/03/2026, 22:53:00 UTC
Last enriched: 09/07/2026, 11:57:26 UTC
Last updated: 10/17/2026, 06:48:21 UTC
Views: 47
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