CVE-2026-125248
7, highFFmpeg Integer Overflow Vulnerability
- CVSS
- 7, high high CVSS v3.1
- EPSS, next 30 days
- n/a
- Exploitation
- No public evidence
- Published
- 9 Nov 2026yesterday
Description
FFmpeg 9.0 through 9.0.2 contains an integer overflow vulnerability in libavcodec/ffv1enc_vulkan.c that undersizes the float remap GPU buffer for large frames. Attackers can supply large GBRPF32 or GBRAPF32 images or videos that, when transcoded to FFV1 with the Vulkan encoder, trigger out-of-bounds GPU memory writes causing crashes or memory corruption.
Details
- Vendor
- FFmpeg
- Product
- FFmpeg
- Weakness
- CWE-190 (opens in a new tab)
- Status
- Received
- Updated
- 9 Nov 2026
- Assigner
- disclosure@vulncheck.com
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References 4
Other references 4
- code.ffmpeg.org /FFmpeg/FFmpeg/pulls/25136 (opens in a new tab)
- github.com /FFmpeg/FFmpeg (opens in a new tab)
- github.com /FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/ffv1enc_vulkan.c#L330 (opens in a new tab)
- vulncheck.com /advisories/ffmpeg-9.0-through-9.0.2-integer-overflow-via-ffv1-vulkan-encoder-remap-buffer (opens in a new tab)
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other FFmpeg CVEs
Every FFmpeg CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2026-125181 FFmpeg Out-of-Bounds Write Vulnerability 7, high
- CVE-2026-125196 FFmpeg Heap-based Buffer Overflow Vulnerability 7, high
- CVE-2026-125201 FFmpeg Out-of-Bounds Write Vulnerability 7, high
- CVE-2026-125202 FFmpeg Out-of-Bounds Write Vulnerability 7, high
- CVE-2026-125203 FFmpeg Out-of-Bounds Write Vulnerability 7.8, high
- CVE-2026-125204 FFmpeg Heap-based Buffer Overflow Vulnerability 7, high
- CVE-2026-125208 FFmpeg Out-of-Bounds Write Vulnerability 7, high
- CVE-2026-125209 FFmpeg before 8.1.3 and 9.x before 9.0.2 contains a heap buffer overflow vulnerability in the DVD subtitle encoder that underestimates… 7.8, high
Beyond this page
Is CVE-2026-125248 in your network?
This page tells you how dangerous CVE-2026-125248 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 10 Nov 2026, not the live upstream state.