CVE-2026-64835 (GCVE-0-2026-64835)
Vulnerability from cvelistv5 – Published: 2026-07-22 17:24 – Updated: 2026-07-28 01:06 X_Open Source
VLAI
EPSS
VEX
Title
FFmpeg 4.4 - 8.1.2 Out-of-Bounds Memory Access in ADX Audio Decoder
Summary
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 AAX audio file with a mid-stream channel layout change. When AV_PKT_DATA_NEW_EXTRADATA side data is received mid-stream, the adx_decode_frame function re-parses the stream header but fails to update the internal channel state, causing subsequent decoding operations to access the prev[] state array using a stale channel count.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 13:46 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23659 | issue-tracking |
| https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1836… | patch |
| https://www.vulncheck.com/advisories/ffmpeg-out-o… | third-party-advisory |
Impacted products
Date Public
2026-07-02 00:00
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