FFmpeg up to 9.0.2 pcm_rechunk bitstream filter integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00+

Summaryinfo

A vulnerability, which was classified as problematic, was found in FFmpeg up to 9.0.2. Affected is an unknown function of the component pcm_rechunk bitstream filter. The manipulation results in integer overflow. This vulnerability is cataloged as CVE-2026-125230. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in FFmpeg up to 9.0.2. Affected is some unknown functionality of the component pcm_rechunk bitstream filter. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. This is going to have an impact on availability. CVE summarizes:

FFmpeg through 9.0.2 contains an integer overflow vulnerability in the pcm_rechunk bitstream filter that allows attackers to trigger division by zero via a crafted channel count. Attackers can supply a file declaring a huge channel count that is remuxed into MXF, GXF or DAUD, overflowing sample_size and crashing the application.

The advisory is shared for download at code.ffmpeg.org. This vulnerability is traded as CVE-2026-125230 since 11/09/2026. The exploitability is told to be easy. The attack needs to be approached locally. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

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

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

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: Integer overflow
CWE: CWE-190 / CWE-189
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

11/09/2026 Advisory disclosed
11/09/2026 +0 days CVE reserved
11/09/2026 +0 days VulDB entry created
11/09/2026 +0 days VulDB entry last update

Sourcesinfo

Product: ffmpeg.org

Advisory: code.ffmpeg.org
Status: Not defined

CNA: VulnCheck
CVE: CVE-2026-125230 (🔒)

GCVE (CVE): GCVE-0-2026-125230
GCVE (VulDB): GCVE-100-433344

Entryinfo

Created: 11/09/2026 20:50
Changes: 11/09/2026 20:50 (73)
Complete: 🔍
Cache ID: 216::103

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