---
id: CVE-2026-67290
title: >-
  FreeRDP before 3.29.0 contains a heap out-of-bounds read vulnerability in the
  TSMF FFmpeg decoder when parsing AVC1 MPEG2VIDEOINFO media types with
  insufficient ExtraData
summary: >-
  FreeRDP before 3.29.0 contains a heap out-of-bounds read vulnerability in the
  TSMF FFmpeg decoder when parsing AVC1 MPEG2VIDEOINFO media types with
  insufficient ExtraData. Attackers can send malformed media format data from a
  server to t…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-125
published: '2026-08-01'
updated: '2026-08-01'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67290'
references:
  - url: >-
      https://github.com/FreeRDP/FreeRDP/commit/8d3b86022f0d71aefa7bd2e466d2d391693a41b3
    label: disclosure@vulncheck.com
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-whq8-c3v3-p8v8'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/freerdp-before-heap-out-of-bounds-read-via-tsmf
    label: disclosure@vulncheck.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-67290.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-67290'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2509984'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-67290'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67290'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68707'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68706'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-08-02T05:17:49.439Z'
epss: 0.00426
epssPercentile: 0.36517
vendor: Red Hat
product: Red Hat Enterprise Linux 10
affected:
  - enterprise_linux 10
  - enterprise_linux 6
  - enterprise_linux 7
  - enterprise_linux 9
scores:
  nvd: 7.5
  vendor: 6.5
patched:
  - enterprise_linux_server_v_7_els
  - enterprise_linux_server_optional_v_7_els
  - enterprise_linux_appstream_eus_v_10_0
  - enterprise_linux_codeready_linux_builder_eus_v_10_0
---

## Overview

FreeRDP before 3.29.0 contains a heap out-of-bounds read vulnerability in the TSMF FFmpeg decoder when parsing AVC1 MPEG2VIDEOINFO media types with insufficient ExtraData. Attackers can send malformed media format data from a server to trigger a crash by reading fixed offsets without validating source buffer length.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-67290.json)
- **RHSA-2026:68707** · Red Hat · fixed in: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS) · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68707)
- **RHSA-2026:68706** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68706)