CVE-2026-124308

Fraunhofer HHI VVdeC before 3.2.1 Use-After-Free via DecLibRecon::createSubPicRefBufs

CVSS score

5.8

EPSS probability

—

Risk score

0.6

Published

4 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Fraunhofer HHI VVdeC CVE-2026-124308 Use-After-Free Vulnerability

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

Fraunhofer HHI VVdeC versions contain a heap use-after-free vulnerability within DecLibRecon::createSubPicRefBufs.

Why does it matter?

A crafted VVC bitstream input can cause heap memory corruption or a decoder crash.

What should be done?

Update to version 3.2.1 or later
Apply vendor patches
Follow vendor advisory guidelines

Chain of evidence and sources2 verified claims

Fraunhofer HHI VVdeC 3.2.1 öncesi sürümler, DecLibRecon::createSubPicRefBufs içinde heap use-after-free barındırır.

S0 · daybreach-canonical S1 · cvelist

Zafiyet, decompressPicture fonksiyonunun bekleyen görevleri beklemeden m_subPicExtTasks ögesini temizlemesinden kaynaklanır.

S0 · daybreach-canonical S1 · cvelist

Show the technical text from the sources

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.

CVSS vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

CWE: CWE-416

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-124308 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	fraunhoferhhi	vvdec	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
5.8	CVSS V4_0	MEDIUM	CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N	CVE CNA
5.8	CVSS V3_1	MEDIUM	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H	CVE CNA
5.8	CVSS V31	MEDIUM	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H	NVD
5.8	CVSS V40	MEDIUM	CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

CNA çözüm referansı

Open source

reference

Yama veya çözüm referansı

Open source

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Apply the official update named in the evidence only to the matching product and version.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-124308 is associated with the following CWEs:

CWE-416: Use After Free

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-124308 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim

PermissionsGerekmiyor

User—

Official Sources and Advisories

https://github.com/fraunhoferhhi/vvdec/issues/403vendor-advisory https://github.com/fraunhoferhhi/vvdec/issues/392vendor-advisory https://github.com/fraunhoferhhi/vvdec/commit/8a0def8ba6050412d33e69a6f1e66e287b039083patch https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/DecoderLib/DecLibRecon.cpp#L405-L420vendor-advisory https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/DecoderLib/DecLibRecon.cpp#L538-L542vendor-advisory https://github.com/fraunhoferhhi/vvdecvendor-advisory VulnCheck Advisory: Fraunhofer HHI VVdeC before 3.2.1 Use-After-Free via DecLibRecon::createSubPicRefBufsvendor-advisory

CVSS Vector Radar Chart

5.8 / 10

Vulnerability Scoring Details

CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredNone required

User InteractionP

Confidentiality (Gizlilik)High

Integrity (Bütünlük)P

Availability (Erişilebilirlik)High

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

fraunhoferhhi

Weakness Type (CWE & CAPEC)

CWE-416

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