CVE-2026-52296

ffmpeg: out-of-bounds read due to missing required padding in WMA extradata allocation paths

Published Sep 13, 2026 CVSS 3.1 · 2.9 Low EPSS < 1% KEV · Not listed
Description
FFmpeg before 9.0 has an out-of-bounds read because of missing required padding in WMA extradata allocation paths in libavcodec/wmaenc.c.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title ffmpeg: out-of-bounds read due to missing required padding in WMA extradata allocation paths
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
Title Out‑of‑Bounds Read in FFmpeg WMA Extradata Allocation
Type Values Removed Values Added
Title Out‑of‑Bounds Read in FFmpeg WMA Extradata Allocation
Type Values Removed Values Added
Description FFmpeg before 9.0 has an out-of-bounds read because of missing required padding in WMA extradata allocation paths in libavcodec/wmaenc.c.
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Weaknesses CWE-125
CPEs cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
Vendors & Products Ffmpeg
Ffmpeg ffmpeg
References
Metrics cvssV3_1

{'score': 2.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 15, 2026, 5:15 PM
Reserved
Jun 8, 2026, 12:00 AM
Status
Analyzed
Published
Sep 13, 2026, 10:17 PM
Modified
Oct 14, 2026, 6:24 PM
Severity
Moderate
Public date
Sep 13, 2026, 12:00 AM