{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-58599","assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","state":"PUBLISHED","assignerShortName":"microsoft","dateReserved":"2026-07-01T18:03:43.124Z","datePublished":"2026-09-08T17:16:52.655Z","dateUpdated":"2026-09-18T13:56:11.286Z"},"containers":{"cna":{"title":"HEVC Video Extensions Remote Code Execution Vulnerability","datePublic":"2026-09-08T14:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:hevc_video_extensions:*:*:*:*:*:*:*:*","versionStartIncluding":"1.0.0","versionEndExcluding":"2.4.87.0"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:hevc_video_extensions_for_licensed_appplications:*:*:*:*:*:*:*:*","versionStartIncluding":"2.0.0.0","versionEndExcluding":"2.4.85.0"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:hevc_video_extensions_from_device_manufacturer:*:*:*:*:*:*:*:*","versionStartIncluding":"2.0.0.0","versionEndExcluding":"2.4.86.0"}]}]}],"affected":[{"vendor":"Microsoft","product":"HEVC Video Extensions","versions":[{"version":"1.0.0","lessThan":"2.4.87.0","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"HEVC Video Extensions for Licensed Applications","versions":[{"version":"2.0.0.0","lessThan":"2.4.85.0","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"HEVC Video Extensions from Device Manufacturer","platforms":["Windows 10 Version 1809 for 32-bit Systems","Windows 10 Version 1809 for x64-based Systems","Windows 10 Version 21H2 for 32-bit Systems","Windows 10 Version 21H2 for ARM64-based Systems","Windows 10 Version 21H2 for x64-based Systems","Windows 10 Version 22H2 for 32-bit Systems","Windows 10 Version 22H2 for ARM64-based Systems","Windows 10 Version 22H2 for x64-based Systems","Windows 11 Version 23H2 for ARM64-based Systems","Windows 11 Version 23H2 for x64-based Systems","Windows 11 Version 24H2 for ARM64-based Systems","Windows 11 Version 24H2 for x64-based Systems","Windows 11 Version 25H2 for ARM64-based Systems","Windows 11 Version 25H2 for x64-based Systems","Windows 11 Version 26H1 for ARM64-based Systems","Windows 11 version 26H1 for x64-based Systems","Windows Server 2019","Windows Server 2019 (Server Core installation)","Windows Server 2022","Windows Server 2022 (Server Core installation)","Windows Server 2025","Windows Server 2025 (Server Core installation)"],"versions":[{"version":"2.0.0.0","lessThan":"2.4.86.0","versionType":"custom","status":"affected"}]}],"descriptions":[{"value":"Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.","lang":"en-US"}],"problemTypes":[{"descriptions":[{"description":"CWE-122: Heap-based Buffer Overflow","lang":"en-US","type":"CWE","cweId":"CWE-122"}]}],"providerMetadata":{"orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","shortName":"microsoft","dateUpdated":"2026-09-18T13:56:11.286Z"},"references":[{"name":"HEVC Video Extensions Remote Code Execution Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58599"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"HIGH","baseScore":7.8,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-09T15:41:56.589167Z","id":"CVE-2026-58599","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-09T16:07:56.191Z"}}]}}