Ghostwire

CVE-2026-67290: FreeRDP before 3.29.0 contains a heap out-of-bounds read vulnerability in the TSMF FFmpeg decoder when parsing AVC1...

HIGH CVSS 7.5 Exploit Available

Published: August 1, 2026 | Last Modified: August 1, 2026

Description

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.

Ghostwire Analysis — What This Means Practically

High CVSS score indicates significant risk — exploitation could lead to substantial data exposure or system compromise.
Exploit code is reported to be available, increasing the likelihood of active exploitation.

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.

References

github.com/FreeRDP/FreeRDP/commit/8d3b86022f0d71aefa7bd2e466d2d391693a41b3
github.com/FreeRDP/FreeRDP/security/advisories/GHSA-whq8-c3v3-p8v8
www.vulncheck.com/advisories/freerdp-before-heap-out-of-bounds-read-via-tsmf
www.tenable.com/cve/CVE-2026-67290
www.cnnvd.org.cn/home/globalSearch?keyword=CVE-2026-67290