{"id":"CVE-2026-52296","title":"FFmpeg before 9.0 has an out-of-bounds read because of missing required padding in WMA extradata allocation paths in libavcodec/wmaenc.c.","summary":"FFmpeg before 9.0 has an out-of-bounds read because of missing required padding in WMA extradata allocation paths in libavcodec/wmaenc.c.","severity":"low","cvss":2.9,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-125"],"vendor":"FFmpeg","product":"FFmpeg","affected":["FFmpeg < 9.0"],"published":"2026-09-13","updated":"2026-09-22","sourceUpdated":"2026-09-22T19:56:19.073","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-52296","references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22988","label":"cve@mitre.org"},{"url":"https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/23227a444de4a8f7696f46660cdd044b460f7e47","label":"cve@mitre.org"},{"url":"https://github.com/Kenan-Kamel/VulnerabilitiesReference/tree/main/FFmpeg/ExtradataPadding","label":"cve@mitre.org"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52296.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-52296"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532792"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-52296"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52296"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00158,"epssPercentile":0.05425,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-15T17:14:58.854308Z"},"scores":{"nvd":2.9,"cna":2.9,"vendor":5.5},"ingestedAt":"2026-09-14T15:23:07.468Z","slug":"CVE-2026-52296","body":"## Overview\n\nFFmpeg before 9.0 has an out-of-bounds read because of missing required padding in WMA extradata allocation paths in libavcodec/wmaenc.c.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI) · no fix planned: Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI) · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52296.json)","depth":"sunlit","depthScore":16,"depthScoreParts":{"impact":16,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204352,"id":"CVE-2026-52296","ts":1789494100298,"field":"cvss","old":"5.5","new":"2.9"},{"seq":204351,"id":"CVE-2026-52296","ts":1789494100298,"field":"severity","old":"medium","new":"low"},{"seq":204199,"id":"CVE-2026-52296","ts":1789490240136,"field":"cvss","old":"2.9","new":"5.5"},{"seq":204198,"id":"CVE-2026-52296","ts":1789490240136,"field":"severity","old":"low","new":"medium"}]}