FFmpeg up to 9.0.2 VDPAU HEVC libavcodec/vdpau_hevc.c vdpau_hevc_start_frame heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.22+

Summaryinfo

A vulnerability, which was classified as problematic, was found in FFmpeg up to 9.0.2. This issue affects the function vdpau_hevc_start_frame of the file libavcodec/vdpau_hevc.c of the component VDPAU HEVC Handler. Such manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2026-125219. The attack needs to be performed locally. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in FFmpeg up to 9.0.2. Affected by this issue is the function vdpau_hevc_start_frame of the file libavcodec/vdpau_hevc.c of the component VDPAU HEVC Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. The product writes past the end of a buffer that was allocated on the heap. Impacted is confidentiality, integrity, and availability. CVE summarizes:

FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in vdpau_hevc_start_frame() in libavcodec/vdpau_hevc.c that copies unbounded PPS tile counts into fixed-size VDPAU arrays. Attackers can supply crafted HEVC bitstreams with excessive tile columns or rows to write controlled 16-bit values past heap-allocated hwaccel data, corrupting memory in applications using VDPAU decoding.

The advisory is shared for download at code.ffmpeg.org. This vulnerability is handled as CVE-2026-125219 since 11/09/2026. The exploitation is known 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. The current price for an exploit might be approx. USD $0-$5k (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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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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: 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-2026-125219 (🔒)

GCVE (CVE): GCVE-0-2026-125219
GCVE (VulDB): GCVE-100-433316

Entryinfo

Created: 11/09/2026 20:42
Changes: 11/09/2026 20:42 (75)
Complete: 🔍
Cache ID: 216::103

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