CVE-2026-120245

FFmpeg 0.10 through 9.0.2 contains a use of uninitialized resource vulnerability in sunrast_decode_frame() that leaks heap memory when decoding truncated 1-bit and 4-bit paletted Sun Raster images. Attackers can craft a truncated Sun Raster file so the uncleared temporary bitmap is expanded into PAL8 pixels, exposing stale heap contents such as allocator words in decoded output.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24877
https://github.com/FFmpeg/FFmpeg
https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/sunrast.c#L188-L194
https://github.com/FFmpeg/FFmpeg/commit/356a391bf57df2fb80fd61f2821c8c83d15ce180
https://github.com/FFmpeg/FFmpeg/commit/66b6ca270b33fd74367d7d371f6de16ec664446e
https://www.vulncheck.com/advisories/ffmpeg-0.10-through-9.0.2-uninitialized-memory-disclosure-via-sun-raster-decoder

Configurations

No configuration.

History

01 Nov 2026, 01:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-11-01 01:17

Updated : 2026-11-02 19:34

NVD link : CVE-2026-120245

Mitre link : CVE-2026-120245

CVE.ORG link : CVE-2026-120245

JSON object : View

Products Affected

No product.

CWE

CWE-908

Use of Uninitialized Resource

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