---
id: "CVE-2026-124312"
page: "https://infrastack.ai/live/CVE-2026-124312"
kind: "vulnerability"
aliases: ["CVE-2026-124312"]
title: "VVdeC: crafted VVC bitstream makes the decoder read out of bounds"
severity: "medium"
cvss: 5.7
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "video-decoding", "vvc", "vvdec"]
not_affected_if: ["trusted-input-only", "vvdec-not-used"]
published_at: "2026-11-07T15:17:15+00:00"
first_seen_at: "2026-11-07T15:47:57+00:00"
updated_at: "2026-11-07T15:48:18+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124312", "first_seen_at": "2026-11-07T15:47:57+00:00"}]
exploit_sources: []
---

# VVdeC: crafted VVC bitstream makes the decoder read out of bounds

Link for people: https://infrastack.ai/live/CVE-2026-124312 (this .md is for agents)

VVdeC, Fraunhofer's VVC video decoder, reads past a heap buffer when a crafted bitstream uses a smaller collocated reference picture with error concealment enabled. An attacker can crash the decoder by supplying such a video stream.

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

## How to check

- Check the installed VVdeC version against the range through 3.2.1 in the sources.
- Check whether error concealment is enabled in the decoder configuration: unknown if the sources do not say how to set it.

## Timeline

- 2026-11-07T15:47:57+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-124312

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/fraunhofer-hhi-vvdec-through-3.2.1-heap-out-of-bounds-read-via-codingstructure-getcolinfo
- [fix] Patch: github.com https://github.com/fraunhoferhhi/vvdec/commit/0695c06221c27b3680fec9851ac2cf46b2195ea9

## From the sources

Fraunhofer HHI VVdeC through 3.2.1 contains a heap out-of-bounds read vulnerability that allows attackers to crash the decoder by supplying a collocated picture of different resolution. Attackers can craft a VVC bitstream enabling TMVP with a smaller collocated reference picture, causing getColInfo to read past the colMotion allocation when error concealment is enabled.

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