Vulnerability Description
FFmpeg versions 2.7 through 8.1.2 contain an out-of-bounds write vulnerability in the TDSC video decoder that allows remote attackers to cause heap corruption by supplying a crafted AVI file that changes frame dimensions across TDSF frames. The tdsc_parse_tdsf() function fails to unreference the existing reference frame before calling av_frame_get_buffer(), causing tdsc_blit() and tdsc_yuv2rgb() to write attacker-controlled pixel data beyond the end of the undersized reference frame buffer, resulting in a process crash and potential code execution.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ffmpeg | Ffmpeg | >= 2.7, <= 8.1.2 |
Related Weaknesses (CWE)
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/fd3ee52fab34d98a95b787d0b5ff4568576Patch
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23773Issue TrackingPatch
- https://www.vulncheck.com/advisories/ffmpeg-out-of-bounds-write-in-tdsc-video-deThird Party Advisory
FAQ
What is CVE-2026-65703?
CVE-2026-65703 is a vulnerability with a CVSS score of 7.8 (HIGH). FFmpeg versions 2.7 through 8.1.2 contain an out-of-bounds write vulnerability in the TDSC video decoder that allows remote attackers to cause heap corruption by supplying a crafted AVI file that chan...
How severe is CVE-2026-65703?
CVE-2026-65703 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-65703?
Check the references section above for vendor advisories and patch information. Affected products include: Ffmpeg Ffmpeg.