{"id":"CVE-2026-54240","state":"PUBLISHED","title":"libde265: Pixel accessor signed integer overflow causes heap OOB read/write","description":"libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or writes, potentially disclosing data, corrupting memory, or crashing the decoder. Version 1.1.1 contains a patch.","publishedAt":"2026-09-11T21:20:59.855Z","updatedAt":"2026-09-14T18:37:21.002Z","severity":{"score":7.4,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["strukturag libde265"],"affected":[{"vendor":"strukturag","product":"libde265","versions":[{"version":"< 1.1.1","status":"affected"}]}],"references":["https://github.com/strukturag/libde265/security/advisories/GHSA-ccfw-29x7-rrx3"],"weaknesses":["CWE-190","CWE-787"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54240.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54240","state":"PUBLISHED","datePublished":"2026-09-11T21:20:59.855Z","dateUpdated":"2026-09-14T18:37:21.002Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-12T16:25:43.084Z"},"containers":{"cna":{"title":"libde265: Pixel accessor signed integer overflow causes heap OOB read/write","descriptions":[{"lang":"en","value":"libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or writes, potentially disclosing data, corrupting memory, or crashing the decoder. Version 1.1.1 contains a patch."}],"affected":[{"vendor":"strukturag","product":"libde265","versions":[{"version":"< 1.1.1","status":"affected"}]}],"references":[{"url":"https://github.com/strukturag/libde265/security/advisories/GHSA-ccfw-29x7-rrx3","name":"https://github.com/strukturag/libde265/security/advisories/GHSA-ccfw-29x7-rrx3","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","lang":"en","description":"CWE-190: Integer Overflow or Wraparound","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-787","lang":"en","description":"CWE-787: Out-of-bounds Write","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-11T21:20:59.855Z"},"source":{"advisory":"GHSA-ccfw-29x7-rrx3","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-14T18:37:02.738620Z","id":"CVE-2026-54240","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-14T18:37:21.002Z"}}]}}}