FFmpeg up to 9.0.2 Sun Raster Decoder sunrast_decode_frame missing initialization

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k1.74+

Summaryinfo

A vulnerability classified as problematic was found in FFmpeg up to 9.0.2. Affected is the function sunrast_decode_frame of the component Sun Raster Decoder. Executing a manipulation can lead to missing initialization. The identification of this vulnerability is CVE-2026-120245. The attack can only be executed locally. There is no exploit available.

Detailsinfo

A vulnerability was found in FFmpeg up to 9.0.2. It has been declared as problematic. This vulnerability affects the function sunrast_decode_frame of the component Sun Raster Decoder. The manipulation with an unknown input leads to a missing initialization vulnerability. The CWE definition for the vulnerability is CWE-456. The product does not initialize critical variables, which causes the execution environment to use unexpected values. As an impact it is known to affect confidentiality. CVE summarizes:

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.

The advisory is shared for download at code.ffmpeg.org. This vulnerability was named CVE-2026-120245 since 10/31/2026. The exploitation appears to be easy. The attack needs to be approached locally. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.1
VulDB Meta Temp Score: 4.1

VulDB Base Score: 2.8
VulDB Temp Score: 2.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing initialization
CWE: CWE-456 / CWE-453
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/31/2026 CVE reserved
11/01/2026 +1 days Advisory disclosed
11/01/2026 +0 days VulDB entry created
11/01/2026 +0 days VulDB entry last update

Sourcesinfo

Product: ffmpeg.org

Advisory: code.ffmpeg.org
Status: Not defined

CNA: VulnCheck
CVE: CVE-2026-120245 (🔒)

GCVE (CVE): GCVE-0-2026-120245
GCVE (VulDB): GCVE-100-429604

Entryinfo

Created: 11/01/2026 02:08
Changes: 11/01/2026 02:08 (74)
Complete: 🔍
Cache ID: 216::103

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