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High severity · published Jun 18, 2026
CVE-2026-8461
Heap out-of-bounds write via odd slice_height in FFmpeg MagicYUV decoder
8.8
CVSS
1.6%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FF
FFmpeg · FFmpeg
before 8.1.2 · source: vendor
RH
Red Hat AI Inference Server · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux AI (RHEL AI) 3 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux AI 3.5 for RHEL 9 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat OpenShift AI (RHOAI) · Red Hat
All versions, or not specified · source: CISA
Affected product
FF
FFmpeg
FFmpeg
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8461
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-8461
code.ffmpeg.org
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23159
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:43711
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-8461
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2490308
security.access.redhat.com
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8461.json
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