What is GHSA-9fvr-q6q4-7h2p?

GHSA-9fvr-q6q4-7h2p is a security advisory published by GitHub Security Advisories with Medium severity. FreeRDP before 3.32.2 allows a client assertion abort because rdpgfx_on_data_received rejects...

Which CVE IDs does GHSA-9fvr-q6q4-7h2p cover?

GHSA-9fvr-q6q4-7h2p covers the following CVE IDs: CVE-2026-121406. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9fvr-q6q4-7h2p?

GHSA-9fvr-q6q4-7h2p has a CVSS v3 base score of 4.3, published by GitHub Security Advisories.

GHSA-9fvr-q6q4-7h2pMediumCVSS 4.3

FreeRDP before 3.32.2 allows a client assertion abort because rdpgfx_on_data_received rejects...

Vendor

GitHub Security Advisories

Published

November 3, 2026

Last Modified

November 3, 2026

🔗 CVE IDs covered (1)

CVE-2026-121406 →

📋 Description

FreeRDP before 3.32.2 allows a client assertion abort because rdpgfx_on_data_received rejects only negative zgfx_decompress status and passes the resulting null output pointer to Stream_StaticConstInit. A malicious RDP server can send a zero-output ZGFX payload on the RDPGFX channel after session activation to terminate the client.

🔗 References (4)

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2c9x-4gr7-hrwx
https://nvd.nist.gov/vuln/detail/CVE-2026-121406
https://www.vulncheck.com/advisories/freerdp-before-3.32.2-client-denial-of-service-via-zero-output-zgfx-payload
https://github.com/advisories/GHSA-9fvr-q6q4-7h2p