CVE-2026-85436: high-severity vulnerability in themoos essential-moos
MOOS essential-moos through 10.0.1 pMOOSBridge Heap Corruption via Negative UDP Length
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 2.1%
MOOS essential-moos through 10.0.1 contains a buffer overflow vulnerability in CMOOSUDPLink::ReadPktFromArray() that allows remote attackers to corrupt heap memory by sending UDP datagrams with negative declared lengths. Attackers can send crafted UDP packets to the configured UDPListen port to trigger an oversized memcpy operation that writes past the destination buffer, causing heap corruption and denial of service.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
themoos · essential-moosRelated CVEs — themoos essential-moos
In the same product, most dangerous first.
CVE-2026-85431HIGHMOOS essential-moos through 10.0.1 pMOOSBridge Unauthenticated UDP Packet InjectionEPSS 3.4%CVE-2026-85430HIGHMOOS essential-moos through 10.0.1 pShare Unauthenticated UDP Datagram RepublishingEPSS 1.7%CVE-2026-85433CRITICALMOOS essential-moos through 10.0.1 pShare Unauthorized Runtime Route ReconfigurationEPSS 0.8%CVE-2026-85427CRITICALMOOS essential-moos through 10.0.1 pAntler Remote Code Execution via Unauthenticated MISSION_FILEEPSS 0.6%
References
https://github.com/themoos/essential-mooshttps://github.com/themoos/essential-moos/blob/b897ea86dba8b61412dc48ac0cfb5ff34cdaf5f6/Essentials/pMOOSBridge/MOOSUDPLink.cpp#L171https://github.com/themoos/essential-moos/commit/613175fcf63fb9c6c5329c4ec57c2d18588b33e2https://github.com/themoos/essential-moos/pull/21https://www.vulncheck.com/advisories/moos-essential-moos-through-10.0.1-pmoosbridge-heap-corruption-via-negative-udp-length