{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-120457","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-02T12:42:22.624Z","datePublished":"2026-11-02T14:29:13.799Z","dateUpdated":"2026-11-02T15:46:06.742Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-02T14:29:13.799Z"},"datePublic":"2026-11-01T00:00:00.000Z","title":"libaec through 1.1.7 Out-of-Bounds Read via m_se_decode() Second Extension Decoder","descriptions":[{"lang":"en","value":"libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Unsigned to Signed Conversion Error","cweId":"CWE-196","type":"CWE"}]}],"affected":[{"vendor":"Deutsches Klimarechenzentrum","product":"libaec","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"1.1.7","status":"affected","versionType":"semver"}],"repo":"https://github.com/Deutsches-Klimarechenzentrum/libaec"}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.8,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":5.3,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/issues/64","tags":["issue-tracking"]},{"url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/pull/66","tags":["issue-tracking","patch"]},{"url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/blob/v1.1.7/src/decode.c#L556-L586","tags":["technical-description"]},{"url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/releases/tag/v1.1.7","tags":["release-notes"],"name":"libaec v1.1.7 Release Notes"},{"url":"https://hackmd.io/@haindpwn/libaec-se-decode-fs-signedness-oob-read","tags":["technical-description"]},{"name":"VulnCheck Advisory: libaec through 1.1.7 Out-of-Bounds Read via m_se_decode() Second Extension Decoder","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/libaec-through-1.1.7-out-of-bounds-read-via-m-se-decode-second-extension-decoder"}],"credits":[{"lang":"en","value":"HaiND from the Post and Telecommunication Institute of Technology","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"references":[{"url":"https://hackmd.io/@haindpwn/libaec-se-decode-fs-signedness-oob-read","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-02T15:45:31.200283Z","id":"CVE-2026-120457","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-02T15:46:06.742Z"}}]}}