HIGHCVSS v3.1 7.0Vulnerability
CVE-2026-125256
FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in ff_llvidenc_diff_bytes_rvv() that allows attackers to corrupt heap memory by triggering negative length values in the Huffyuv encoder. Attackers can supply RGB video narrower than 8 or 16 pixels for huffyuv transcoding on RVV-enabled RISC-V builds, causing writes past the encoder's temp buffer.
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-2026-125256
- 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-2026-125256
- Vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published at
- 2026-11-09T20:18:11.790
- Last modified
- 2026-11-10T21:46:37.247
- Epss percentile
- 0.03634
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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