FFmpeg 2.0 through 9.0.2 contains a use of uninitialized variable vulnerability in the Go2Meeting decoder that allows attackers to leak stack memory through out-of-range palette indices. Attackers can craft a G2M3/G2M4 stream with a short Kempf palette so kempf_restore_buf() copies uninitialized stack bytes, including pointers or stack guards, into decoded output.
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Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sun, 01 Nov 2026 01:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | FFmpeg 2.0 through 9.0.2 contains a use of uninitialized variable vulnerability in the Go2Meeting decoder that allows attackers to leak stack memory through out-of-range palette indices. Attackers can craft a G2M3/G2M4 stream with a short Kempf palette so kempf_restore_buf() copies uninitialized stack bytes, including pointers or stack guards, into decoded output. | |
| Title | FFmpeg 2.0 through 9.0.2 Information Disclosure via G2M Kempf Palette | |
| First Time appeared |
Ffmpeg
Ffmpeg ffmpeg |
|
| Weaknesses | CWE-457 | |
| CPEs | cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Ffmpeg
Ffmpeg ffmpeg |
|
| References |
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|
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-01T00:57:09.338Z
Reserved: 2026-10-31T22:05:52.181Z
Link: CVE-2026-120243
No data.
Status : Received
Published: 2026-11-01T01:17:17.593
Modified: 2026-11-01T01:17:17.593
Link: CVE-2026-120243
No data.
OpenCVE Enrichment
Updated: 2026-11-01T02:45:10Z
Weaknesses