What is GHSA-26v7-mr7m-fqqx?

GHSA-26v7-mr7m-fqqx is a security advisory published by GitHub Security Advisories with High severity. FreeRDP before 3.32.2 contains a denial of service vulnerability in the shadow server that allows...

Which CVE IDs does GHSA-26v7-mr7m-fqqx cover?

GHSA-26v7-mr7m-fqqx covers the following CVE IDs: CVE-2026-121404. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-26v7-mr7m-fqqx?

GHSA-26v7-mr7m-fqqx has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-26v7-mr7m-fqqxHighCVSS 6.5

FreeRDP before 3.32.2 contains a denial of service vulnerability in the shadow server that allows...

Vendor

GitHub Security Advisories

Published

November 3, 2026

Last Modified

November 3, 2026

🔗 CVE IDs covered (1)

CVE-2026-121404 →

📋 Description

FreeRDP before 3.32.2 contains a denial of service vulnerability in the shadow server that allows authenticated RDP clients to spin server threads by sending zero-length drdynvc DATA PDUs. Attackers can send empty DATA messages on opened audin or rdpgfx channels, so that FreeRDP_WTSVirtualChannelRead never consumes them, consuming full CPU cores until disconnect.

🔗 References (4)

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-fqcj-rwww-2498
https://nvd.nist.gov/vuln/detail/CVE-2026-121404
https://www.vulncheck.com/advisories/freerdp-before-3.32.2-shadow-server-cpu-exhaustion-via-zero-length-dvc-data
https://github.com/advisories/GHSA-26v7-mr7m-fqqx