{"id":"CVE-2026-85438","state":"PUBLISHED","title":"MOOS-IvP through 24.8.1 Out-of-Bounds Write via Unvalidated IvP Payload Counts","description":"MOOS-IvP through 24.8.1 contains a buffer overflow vulnerability in StringToIvPFunction() where dimension, piece, and degree counts from encoded BHV_IPF payloads are used as allocation sizes and loop bounds without validation. Attackers can supply crafted payloads with mismatched dimension values to write attacker-controlled doubles past the end of the IvPBox weight array, causing memory corruption and potential code execution.","publishedAt":"2026-09-03T22:38:29.903Z","updatedAt":"2026-09-14T13:50:51.272Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["moos-ivp moos-ivp"],"affected":[{"vendor":"moos-ivp","product":"moos-ivp","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"24.8.1","versionType":"custom"}]}],"references":["https://github.com/moos-ivp/moos-ivp/pull/126","https://github.com/moos-ivp/moos-ivp/commit/85f4653ff792b30c3ab14dc0eac0991d1405d904","https://github.com/moos-ivp/moos-ivp","https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/lib_ivpbuild/FunctionEncoder.cpp#L407","https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-out-of-bounds-write-via-unvalidated-ivp-payload-counts"],"weaknesses":["CWE-190"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/85xxx/CVE-2026-85438.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-85438","state":"PUBLISHED","datePublished":"2026-09-03T22:38:29.903Z","dateUpdated":"2026-09-14T13:50:51.272Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-03T19:50:56.896Z"},"containers":{"cna":{"title":"MOOS-IvP through 24.8.1 Out-of-Bounds Write via Unvalidated IvP Payload Counts","descriptions":[{"lang":"en","value":"MOOS-IvP through 24.8.1 contains a buffer overflow vulnerability in StringToIvPFunction() where dimension, piece, and degree counts from encoded BHV_IPF payloads are used as allocation sizes and loop bounds without validation. Attackers can supply crafted payloads with mismatched dimension values to write attacker-controlled doubles past the end of the IvPBox weight array, causing memory corruption and potential code execution."}],"affected":[{"vendor":"moos-ivp","product":"moos-ivp","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"24.8.1","versionType":"custom"}]}],"references":[{"url":"https://github.com/moos-ivp/moos-ivp/pull/126","tags":["issue-tracking","patch"],"name":"Pull Request #126"},{"url":"https://github.com/moos-ivp/moos-ivp/commit/85f4653ff792b30c3ab14dc0eac0991d1405d904","tags":["patch"],"name":"Proposed fix commit (pull request not merged)"},{"url":"https://github.com/moos-ivp/moos-ivp","tags":["product"]},{"url":"https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/lib_ivpbuild/FunctionEncoder.cpp#L407","tags":["technical-description"],"name":"FunctionEncoder.cpp (verified sink)"},{"url":"https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-out-of-bounds-write-via-unvalidated-ivp-payload-counts","name":"VulnCheck Advisory: MOOS-IvP through 24.8.1 Out-of-Bounds Write via Unvalidated IvP Payload Counts","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.3,"baseSeverity":"CRITICAL"}},{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","lang":"en","description":"Integer Overflow or Wraparound","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-03T22:38:29.903Z"},"datePublic":"2026-09-02T00:00:00.000Z","credits":[{"lang":"en","value":"Vlatko Kosturjak","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-85438","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-09-14T13:08:17.831933Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-14T13:50:51.272Z"}}]}}}