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CVE-2026-120245VulnerabilityPublished Updated

Libav: FFmpeg 0.10 through 9.0.2 contains a use of uninitialized resource vulnerability in sunrast_decode_frame() that

Affects libavSource GCVE Database

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Authoritative record:CVE-2026-120245· Medium 6.8

Not known to be exploited · CVSS 6.8 Medium.

Data as of 5 Nov 2026, 12:48 UTC

CVSS 4.0 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.06.8
CNA (VulnCheck)CVSS 3.15.5
CNACVSS 4.06.8
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10ffmpegpkg:deb/ubuntu/ffmpeg?arch=source&distro=stonkingOther threatsAffected
  • =7:8.0.1-3ubuntu2
  • =7:8.1-3ubuntu3
  • =7:8.1.2-2ubuntu2
Fixed in–
Ubuntu Pro 26.04 LTSffmpegpkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps/resoluteOther threatsAffected
  • 7:7.1.1-1ubuntu4 – 7:8.0.1-3ubuntu2+esm5
11 affected builds
Fixed in–
Ubuntu Pro 24.04 LTSffmpegpkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps/nobleOther threatsAffected
  • 7:6.0-6ubuntu1 – 7:6.1.1-3ubuntu5+esm15
22 affected builds
Fixed in–
Ubuntu Pro 22.04 LTSffmpegpkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps/jammyOther threatsAffected
  • 7:4.4-6ubuntu5 – 7:4.4.2-0ubuntu0.22.04.1+esm17
24 affected builds
Fixed in–
Ubuntu Pro 20.04 LTSffmpegpkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps/focalOther threatsAffected
  • 7:4.1.4-1build2 – 7:4.2.7-0ubuntu0.1+esm18
26 affected builds
Fixed in–
Ubuntu Pro 18.04 LTSffmpegpkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps/bionicOther threatsAffected
  • 7:3.3.4-2 – 7:3.4.11-0ubuntu0.1+esm16
30 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, avoid processing untrusted or truncated Sun Raster images with affected FFmpeg versions to mitigate risk.

Description

FFmpeg versions 0.10 through 9.0.2 contain a vulnerability in the sunrast_decode_frame() function where uninitialized heap memory can be leaked when decoding truncated 1-bit and 4-bit paletted Sun Raster images. This occurs because the temporary bitmap is not cleared properly, leading to exposure of stale heap contents in the decoded output.

References

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