HIGHCVSS v3.1 7.0Vulnerability
CVE-2026-125257
FFmpeg through 9.0.2 contains an off-by-one heap overflow vulnerability in get_exponent_dynamic() in libavcodec/nellymoserenc.c that allows writing one element past the opt and path allocations. Attackers can supply crafted audio to applications encoding Nellymoser with trellis enabled, causing idx to equal OPT_SIZE and overwrite adjacent heap memory.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-10T23:33:48.924589+00:00
- Epss score
- 0.00143
- Cvss severity
- HIGH
- Cvss score
- 7
- Retrieved at
- 2026-11-10T23:35:17+00:00
- Last source
- FIRST EPSS
- Score
- 7
- Cvss version
- 3.1
- Cve id
- CVE-2026-125257
- Cvss vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- First seen by Signal
- 2026-11-09T23:18:15+00:00
- Name
- CVE-2026-125257
- Vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published at
- 2026-11-09T20:18:11.930
- Last modified
- 2026-11-10T21:46:33.920
- Epss percentile
- 0.03635
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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