CVE-2026-124310 Fraunhofer HHI VVdeC before 3.2.1 Out-of-Bounds Read via Slice::getRefPic

Medium 6.9 Published 7 Nov 2026 Updated 11 Nov 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-124310?

CVE-2026-124310 is a medium-severity vulnerability in fraunhoferhhi vvdec, published on 7 Nov 2026.

Official description

Fraunhofer HHI VVdeC before 3.2.1 contains an out-of-bounds read vulnerability that allows attackers to crash the decoder by supplying bitstreams with overlapping slice CTU coverage. Attackers can code a CTU in a second slice so a bi-predicted BDOF coding unit carries a negative reference index, causing Slice::getRefPic to read outside m_apcRefPicList and crash decoding.

Weakness: CWE-129

Which versions are affected by CVE-2026-124310?

How do I fix CVE-2026-124310?

No fix has been published for CVE-2026-124310 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-124310 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-124310 exists.

Sources

Also known as GHSA-4jc3-2h8h-765r.