CVE-2026-125186 FFmpeg through 9.0.2 CPU Exhaustion via dts2pts Bitstream Filter
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-125186?
CVE-2026-125186 is a medium-severity vulnerability in FFmpeg, published on 9 Nov 2026.
Official description
FFmpeg through 9.0.2 contains an uncontrolled resource consumption vulnerability in the dts2pts bitstream filter that allows attackers to exhaust CPU through unbounded per-packet POC node allocation. Attackers can supply a crafted H.264 packet with many slices of alternating picture order counts, forcing h264_queue_frame() to allocate tree nodes per slice and deny service.
Weakness: CWE-770
Which versions are affected by CVE-2026-125186?
How do I fix CVE-2026-125186?
No fix has been published for CVE-2026-125186 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-125186 being exploited?
There is no known exploitation of CVE-2026-125186 in the wild and no public exploit code.
Sources
Also known as GHSA-j2c9-5fj2-993m, UBUNTU-CVE-2026-125186.