CVE-2026-8461Heap out-of-bounds write via odd slice_height in FFmpeg MagicYUV decoder
Updated under an hour ago ()
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It affects FFmpeg and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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An out-of-bounds write vulnerability in FFmpeg's libavcodec library, specifically in the MagicYUV decoder, allows denial-of-service and, in some cases, can be exploited for remote code execution. This vulnerability is associated with the file libavcodec/magicyuv.C. This issue affects FFmpeg before version 8.1.2.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- JFROG
- NVD analysis
- Awaiting Analysis
- Record last updated
- Jul 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
FFmpeg FFmpeg ffmpeg:ffmpeg (from the name) | before 8.1.2 | CNA record |
Red Hat Red Hat Enterprise Linux AI 3.5 for RHEL 9 redhat:enterprise_linux_ai | from 0:6.1.6-1.el9ai not affected | CISA ADP |
Red Hat Red Hat AI Inference Server redhat:ai_inference_server | 3 | CISA ADP |
Red Hat Red Hat OpenShift AI (RHOAI) redhat:openshift_ai | All versions | CISA ADP |
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23159
- https://access.redhat.com/errata/RHSA-2026:43711
- https://access.redhat.com/security/cve/CVE-2026-8461
- https://bugzilla.redhat.com/show_bug.cgi?id=2490308
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8461.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.