CVE-2026-8461
CVE-2026-8461 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 0% (38th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-37878
- Weakness: CWE-787
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-8461?
- 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.
- How severe is CVE-2026-8461?
- CVE-2026-8461 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-8461 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-8461?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-8461 have an EU (EUVD) identifier?
- Yes. CVE-2026-8461 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37878.
- When was CVE-2026-8461 published?
- CVE-2026-8461 was published on 2026-06-18 and last updated on 2026-06-30.
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23159
- 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
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