MEDIUMCVSS v3.1 6.1Vulnerability
CVE-2026-125197
FFmpeg through 9.0.2 contains an integer underflow in decode_frame() in libavcodec/lcldec.c that allows attackers to trigger a heap out-of-bounds read via short ZLIB packets with FLAG_MULTITHREAD. Attackers can supply a crafted AVI or MKV file with an LCL video stream whose packet is shorter than 8 bytes, bypassing length clamping to crash the decoding application.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-10T23:33:48.924589+00:00
- Epss score
- 0.00135
- Cvss severity
- MEDIUM
- Cvss score
- 6.1
- Retrieved at
- 2026-11-10T23:35:17+00:00
- Last source
- FIRST EPSS
- Score
- 6.1
- Cvss version
- 3.1
- Cve id
- CVE-2026-125197
- Cvss vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- First seen by Signal
- 2026-11-09T23:18:15+00:00
- Name
- CVE-2026-125197
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- Published at
- 2026-11-09T19:16:55.823
- Last modified
- 2026-11-10T21:46:42.560
- Epss percentile
- 0.03039
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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