FFmpeg up to 9.0.2 VideoToolbox Encoder videotoolboxenc.c heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.9$0-$5k0.00+

Summaryinfo

A vulnerability classified as problematic has been found in FFmpeg up to 9.0.2. The affected element is an unknown function of the file libavcodec/videotoolboxenc.c of the component VideoToolbox Encoder. This manipulation causes heap-based overflow. This vulnerability is registered as CVE-2026-125212. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability was found in FFmpeg up to 9.0.2. It has been declared as problematic. Affected by this vulnerability is some unknown processing of the file libavcodec/videotoolboxenc.c of the component VideoToolbox Encoder. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. The product writes past the end of a buffer that was allocated on the heap. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in libavcodec/videotoolboxenc.c that copies frames larger than encoder dimensions into undersized CVPixelBuffers. Attackers can supply crafted input whose resolution grows mid-stream, transcoded with VideoToolbox encoders without rescaling, to crash the application or corrupt memory.

The advisory is shared at code.ffmpeg.org. This vulnerability is known as CVE-2026-125212 since 11/09/2026. The exploitation appears to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/09/2026).

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

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.8
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.0
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
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-2026-125212 (🔒)

GCVE (CVE): GCVE-0-2026-125212
GCVE (VulDB): GCVE-100-433285

Entryinfo

Created: 11/09/2026 20:32
Changes: 11/09/2026 20:32 (74)
Complete: 🔍
Cache ID: 216::103

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