FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in dvbsub_encode() in libavcodec/dvbsubenc.c that undercounts each CLUT segment header by two bytes. Attackers can supply a file with many bitmap subtitle rectangles that, when transcoded to the dvbsub encoder, writes past the output buffer and corrupts heap memory.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 09 Nov 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in dvbsub_encode() in libavcodec/dvbsubenc.c that undercounts each CLUT segment header by two bytes. Attackers can supply a file with many bitmap subtitle rectangles that, when transcoded to the dvbsub encoder, writes past the output buffer and corrupts heap memory. | |
| Title | FFmpeg through 9.0.2 Heap Buffer Overflow via DVB Subtitle Encoder | |
| First Time appeared |
Ffmpeg
Ffmpeg ffmpeg |
|
| Weaknesses | CWE-131 | |
| CPEs | cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Ffmpeg
Ffmpeg ffmpeg |
|
| References |
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|
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-09T19:11:44.406Z
Reserved: 2026-11-09T18:15:23.954Z
Link: CVE-2026-125233
No data.
Status : Received
Published: 2026-11-09T19:17:01.293
Modified: 2026-11-09T19:17:01.293
Link: CVE-2026-125233
No data.
OpenCVE Enrichment
Updated: 2026-11-09T21:30:11Z
Weaknesses