Vulnerability DatabaseCVE-2026-125172
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CVE-2026-125172
Published:November 09, 2026
Updated:November 10, 2026
FFmpeg through 9.0.2 contains an out-of-bounds read vulnerability in libxevd_receive_frame() in libavcodec/libxevd.c that fails to validate NAL unit length prefixes against remaining packet data. Attackers can supply crafted EVC media with oversized 4-byte NAL length prefixes, causing libxevd to read past the packet buffer, crashing the application or exposing adjacent heap memory.
Related Resources (8)
https://nvd.nist.gov/vuln/detail/CVE-2026-125172
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25416
https://code.ffmpeg.org/FFmpeg/FFmpeg
https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/libxevd.c#L355
https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-out-of-bounds-read-via-libxevd-evc-nal-length
https://github.com/FFmpeg/FFmpeg/commit/e06b3953d4253f8b56271628ba4083fde96aeadb
https://github.com/FFmpeg/FFmpeg
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/125xxx/CVE-2026-125172.json
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CVSS v4
Base Score:
6.9
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Out-of-bounds Read
CWE-125