Fraunhofer HHI vvdec up to 3.2.0 DecLibRecon createSubPicRefBufs use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.78+

Summaryinfo

A vulnerability labeled as problematic has been found in Fraunhofer HHI vvdec up to 3.2.0. This affects the function DecLibRecon::createSubPicRefBufs of the component DecLibRecon. Such manipulation leads to use after free. This vulnerability is listed as CVE-2026-124308. The attack must be carried out locally. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Fraunhofer HHI vvdec up to 3.2.0. It has been rated as problematic. Affected by this issue is the function DecLibRecon::createSubPicRefBufs of the component DecLibRecon. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Fraunhofer HHI VVdeC before 3.2.1 contains a heap use-after-free vulnerability in DecLibRecon::createSubPicRefBufs because decompressPicture clears m_subPicExtTasks without waiting for pending tasks. Attackers can supply a crafted multi-subpicture VVC bitstream to decoders using two or more threads, causing heap memory corruption or a decoder crash.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-124308 since 11/07/2026. The exploitation is known to be easy. Local access is required to approach this attack. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

Upgrading to version 3.2.1 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

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: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.8
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / 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: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: vvdec 3.2.1

Timelineinfo

11/07/2026 Advisory disclosed
11/07/2026 +0 days CVE reserved
11/07/2026 +0 days VulDB entry created
11/07/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CNA: VulnCheck
CVE: CVE-2026-124308 (🔒)

GCVE (CVE): GCVE-0-2026-124308
GCVE (VulDB): GCVE-100-432638

Entryinfo

Created: 11/07/2026 15:41
Changes: 11/07/2026 15:41 (77)
Complete: 🔍
Cache ID: 216::103

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