Out-of-bounds Read in Ffmpeg
CVE-2026-64833
FFmpeg versions 0.7.1 through 8.1.2 contain an out-of-bounds read vulnerability in the S/PDIF muxer that allows attackers to access memory beyond buffer boundaries by supplying a crafted DTS stream with a core_size value larger than the ac…
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.
Affected products
- Ffmpeg — versions 0.7.1, 6f80e2765492700622596af720534cef33dd31b4
Weakness classification (CWE)
References
- disclosure@vulncheck.com (issue-tracking)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-64833?
- CVE-2026-64833 is a high-severity vulnerability in Ffmpeg, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2026-07-22.
- How severe is CVE-2026-64833?
- High severity. CVSS v3 base score is 7.1 out of 10.