CVE-2026-75141

FFmpeg before commit acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, the NAL unit count overflows, causing a heap buffer overflow. A crafted HEVC input file triggers the overflow during muxing.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/acf5d7cdc1f9ae8752c23e1ea8d7f355ed780781
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24088
https://www.vulncheck.com/advisories/ffmpeg-heap-buffer-overflow-in-hvcc-box-writer-via-hevc-muxing

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-19 17:21

Updated : 2026-08-31 20:37

NVD link : CVE-2026-75141

Mitre link : CVE-2026-75141

CVE.ORG link : CVE-2026-75141

JSON object : View

Products Affected

No product.

CWE

CWE-122

Heap-based Buffer Overflow

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