CVE-2026-75141 (GCVE-0-2026-75141)

Vulnerability from cvelistv5 – Published: 2026-08-19 16:24 – Updated: 2026-10-27 10:14 X_Open Source
VLAI
Title
FFmpeg Heap Buffer Overflow in hvcC Box Writer via HEVC Muxing
Summary
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.
Severity
8.5 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 00:00 UTC
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7427 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
FFmpeg FFmpeg Affected: 0 , < acf5d7cdc1f9ae8752c23e1ea8d7f355ed780781 (git)
    cpe:2.3:a:ffmpeg:ffmpeg:-:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-04 00:00
Credits
Joshua Rogers (AISLE Research)
Show details on NVD website
To clipboard 

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