Description
FFmpeg 0.10 through 9.0.2 contains an uninitialized memory disclosure vulnerability in sunrast_decode_frame() in libavcodec/sunrast.c that leaves decoded image regions unwritten for truncated input. Attackers can supply a crafted truncated Sun Raster image, RLE-encoded or raw, to leak stale heap contents such as allocator metadata through the decoded picture.
Published: 2026-11-01
Score: 6.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 11 Nov 2026 02:45:00 +0000

Type Values Removed Values Added
Description 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. FFmpeg 0.10 through 9.0.2 contains an uninitialized memory disclosure vulnerability in sunrast_decode_frame() in libavcodec/sunrast.c that leaves decoded image regions unwritten for truncated input. Attackers can supply a crafted truncated Sun Raster image, RLE-encoded or raw, to leak stale heap contents such as allocator metadata through the decoded picture.

Mon, 02 Nov 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 01 Nov 2026 12:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Sun, 01 Nov 2026 01:00:00 +0000

Type Values Removed Values Added
Description 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.
Title FFmpeg 0.10 through 9.0.2 Uninitialized Memory Disclosure via Sun Raster Decoder
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Weaknesses CWE-908
CPEs cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
Vendors & Products Ffmpeg
Ffmpeg ffmpeg
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6.8, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-11T02:37:14.008Z

Reserved: 2026-10-31T22:05:58.146Z

Link: CVE-2026-120245

cve-icon Vulnrichment

Updated: 2026-11-02T14:39:58.350Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-01T01:17:17.960

Modified: 2026-11-11T03:16:48.980

Link: CVE-2026-120245

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-11-01T00:57:10Z

Links: CVE-2026-120245 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-11-01T02:45:10Z

Weaknesses