MEDIUMCVSS v3.1 5.5Vulnerability
CVE-2026-120246
FFmpeg 4.4 through 9.0.2 contains a use of uninitialized variable vulnerability in the CDXL decoder that leaks stack memory into decoded pixels via unfilled HAM palette entries. Attackers can craft a type-0 CDXL file whose HAM pixels select unfilled new_palette entries in cdxl_decode_ham8() or cdxl_decode_ham6(), exposing stack bytes and pointer fragments in the BGR24 output.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-01T04:23:23.117307+00:00
- Cvss score
- 5.5
- Cvss severity
- MEDIUM
- Retrieved at
- 2026-11-01T04:27:23+00:00
- Score
- 5.5
- Last source
- NVD
- Cvss version
- 3.1
- Cve id
- CVE-2026-120246
- Cvss vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- First seen by Signal
- 2026-11-01T04:27:23+00:00
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- Published at
- 2026-11-01T01:17:18.147
- Last modified
- 2026-11-01T01:17:18.147
Related Entities (1)
HAS_WEAKNESS (1)
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