MEDIUMCVSS v3.1 5.5Vulnerability
CVE-2026-125221
FFmpeg through 9.0.2 contains an uncontrolled recursion vulnerability in score_header() in libavcodec/flac_parser.c that allows attackers to exhaust the thread stack via crafted FLAC input. Attackers can supply a FLAC stream packed with many small valid-looking frame headers, forcing deep recursion that crashes the process during demuxing or parsing.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-10T23:33:48.924589+00:00
- Epss score
- 0.00165
- Cvss severity
- MEDIUM
- Cvss score
- 5.5
- Retrieved at
- 2026-11-10T23:35:17+00:00
- Last source
- FIRST EPSS
- Score
- 5.5
- Cvss version
- 3.1
- Cve id
- CVE-2026-125221
- Cvss vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- First seen by Signal
- 2026-11-09T23:18:15+00:00
- Name
- CVE-2026-125221
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Published at
- 2026-11-09T19:16:59.493
- Last modified
- 2026-11-10T21:46:33.890
- Epss percentile
- 0.05731
Related Entities (1)
HAS_WEAKNESS (1)
Related research
Explore deeper with Ninja Signal's threat intelligence graph