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CVE-2026-120247

6.8 mediumEPSS 0.1%

Medium (6.8). EPSS 0.1% estimated probability of exploitation activity in the next 30 days.

FFmpeg 2.3 through 9.0.2 contains a use of uninitialized resource vulnerability in the Huffyuv decoder that allows attackers to leak heap memory into decoded pixels via short packed-BGR bitstreams. Attackers can craft a Huffyuv BGR24/BGRA video whose entropy data ends early, causing decode_slice() to add uninitialized s->temp[0] bytes into output frames, exposing heap contents.

Severity

CVSS 4.0

6.8 medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

5.5 medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS
0.1% estimated probability of exploitation activity in the next 30 days; 2nd percentile. Scored 2026-11-01. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-908 Use of Uninitialized Resource
Published
Modified
Record from
the NVD, synced

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References

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