---
id: "CVE-2026-124310"
page: "https://infrastack.ai/live/CVE-2026-124310"
kind: "vulnerability"
aliases: ["CVE-2026-124310"]
title: "VVdeC: out-of-bounds read lets crafted bitstreams crash the video decoder"
severity: "medium"
cvss: 6.9
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "video-decoding", "vvc", "vvdec"]
not_affected_if: ["no-vvdec-in-use", "trusted-input-only"]
published_at: "2026-11-07T15:17:14+00:00"
first_seen_at: "2026-11-07T15:47:57+00:00"
updated_at: "2026-11-07T15:48:13+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124310", "first_seen_at": "2026-11-07T15:47:57+00:00"}]
exploit_sources: []
---

# VVdeC: out-of-bounds read lets crafted bitstreams crash the video decoder

Link for people: https://infrastack.ai/live/CVE-2026-124310 (this .md is for agents)

VVdeC is Fraunhofer HHI's VVC video decoder library. A crafted bitstream with overlapping slice coverage makes it read outside a reference picture list, crashing decoding.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed VVdeC version against the library's version output or package manifest
- Look for VVdeC in your dependencies or in apps that embed the decoder

## Fix

- VVdeC: upgrade to `3.2.1` or later

## Timeline

- 2026-11-07T15:47:57+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-124310

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/fraunhofer-hhi-vvdec-before-3.2.1-out-of-bounds-read-via-slice-getrefpic
- [fix] Patch: github.com https://github.com/fraunhoferhhi/vvdec/commit/32b842c10bf024f09bc7cf1445fa6f8a987422ca
- [fix] Patch: github.com https://github.com/fraunhoferhhi/vvdec/commit/6e4b907ef5ab9db390b1293ba1ad5d7dd0a67e3f

## From the sources

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.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_