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VulnerabilityPublished

CVE-2026-125232: FFmpeg · Divide By Zero

Affects FFmpegSource CVE Database V5

0
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Not known to be exploited · CVSS 6.8 Medium.

Data as of 9 Nov 2026, 20:18 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
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 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 9 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
FFmpegFFmpegAffected
  • <=9.0.2
Fixed in–
GitHubFFmpegpkg:github/FFmpegOther threatsAffected
  • <=9.0.2
Fixed in–

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

AI-suggested

Users should check the FFmpeg vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted input streams that may contain crafted timestamp gaps triggering this vulnerability.

Description

CVE-2026-125232 is a division by zero vulnerability in FFmpeg versions up to 9.0.2. It occurs in the estimate_motion_b() function within libavcodec/motion_est.c due to frame timestamp distances truncated to 16 bits. Maliciously crafted input with timestamp gaps that are multiples of 65536 can cause the encoder to crash with a SIGFPE signal during MPEG-4 Part 2 or MPEG-1/2 B-frame encoding.

References

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