{"id":"CVE-2026-85442","title":"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","summary":"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 p…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-789"],"published":"2026-09-03","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:07:17.943","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85442","references":[{"url":"https://github.com/themoos/core-moos","label":"disclosure@vulncheck.com"},{"url":"https://github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/Comms/MOOSCommPkt.cpp#L99","label":"disclosure@vulncheck.com"},{"url":"https://github.com/themoos/core-moos/commit/e7ea624a7b7828b47fcd35fc43feec1f5cfbbe21","label":"disclosure@vulncheck.com"},{"url":"https://github.com/themoos/core-moos/pull/81","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-moosdb-denial-of-service-via-unbounded-packet-allocation","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00412,"epssPercentile":0.35124,"ingestedAt":"2026-09-08T20:10:03.161Z","slug":"CVE-2026-85442","body":"## Overview\n\nMOOS 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}