FFmpeg through 9.0.2 contains an information disclosure vulnerability in the VMnc decoder in libavcodec/vmnc.c that restores an unwritten cursor save area into later frames. Attackers can supply a crafted VMnc stream where a frame fails after loading a cursor shape, causing uninitialized heap bytes from screendta to appear in decoded output.
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Affected Vendors & Products
References
History
Mon, 09 Nov 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | FFmpeg through 9.0.2 contains an information disclosure vulnerability in the VMnc decoder in libavcodec/vmnc.c that restores an unwritten cursor save area into later frames. Attackers can supply a crafted VMnc stream where a frame fails after loading a cursor shape, causing uninitialized heap bytes from screendta to appear in decoded output. | |
| Title | FFmpeg through 9.0.2 VMnc Decoder Uninitialized Heap Memory Disclosure | |
| First Time appeared |
Ffmpeg
Ffmpeg ffmpeg |
|
| Weaknesses | CWE-908 | |
| CPEs | cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Ffmpeg
Ffmpeg ffmpeg |
|
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-11-09T19:10:56.303Z
Updated: 2026-11-09T19:10:56.303Z
Reserved: 2026-11-09T17:44:25.282Z
Link: CVE-2026-125101
No data.
Status : Awaiting Analysis
Published: 2026-11-09T19:16:51.177
Modified: 2026-11-10T21:46:33.753
Link: CVE-2026-125101
No data.
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