Critical severity9.8NVD Advisory· Published Sep 3, 2026· Updated Oct 14, 2026
CVE-2026-85440
CVE-2026-85440
Description
MOOS core-moos through 10.4.0 contains a pre-authentication heap overflow vulnerability in MOOSCommPkt packet handling that allows remote attackers to write arbitrary data by declaring a negative packet length. Attackers can exploit the signed integer check in InflateTo() and negative size conversion in recv() to overflow a four-byte heap buffer during the HandShake phase before authentication.
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Affected products
2Patches
Vulnerability mechanics
References
4- github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/Comms/MOOSCommPkt.cppnvdIssue TrackingPatch
- github.com/themoos/core-moos/commit/96c49c5cdda6e07ee734a5324e8d25ba5a7f2d7anvdIssue TrackingPatch
- github.com/themoos/core-moos/pull/82nvdIssue TrackingPatch
- www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-moosdb-pre-authentication-heap-overflow-via-negative-packet-lengthnvdThird Party Advisory
News mentions
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