Buffer overflow in Ffmpeg
CVE-2026-64835
FFmpeg versions 4.4 through 8.1.2 contain an out-of-bounds memory access vulnerability in the ADX audio decoder within libavcodec/adxdec.c that allows attackers to trigger both out-of-bounds reads and writes by supplying a crafted ADX or A…
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Ffmpeg — versions 4.4, 1836ef96846937a6cc2443698a693104f5c0b21e
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-2026-64835?
- CVE-2026-64835 is a high-severity vulnerability in Ffmpeg, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-07-22.
- How severe is CVE-2026-64835?
- High severity. CVSS v3 base score is 8.8 out of 10.