What is GHSA-c9xf-6g3r-f7hf?

GHSA-c9xf-6g3r-f7hf is a security advisory published by GitHub Security Advisories with Medium severity. FreeRDP before 3.32.2 contains a memory allocation vulnerability in rdg_receive_packet that...

Which CVE IDs does GHSA-c9xf-6g3r-f7hf cover?

GHSA-c9xf-6g3r-f7hf covers the following CVE IDs: CVE-2026-121399. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-c9xf-6g3r-f7hf?

GHSA-c9xf-6g3r-f7hf has a CVSS v3 base score of 4.3, published by GitHub Security Advisories.

GHSA-c9xf-6g3r-f7hfMediumCVSS 4.3

FreeRDP before 3.32.2 contains a memory allocation vulnerability in rdg_receive_packet that...

Vendor

GitHub Security Advisories

Published

November 3, 2026

Last Modified

November 3, 2026

🔗 CVE IDs covered (1)

CVE-2026-121399 →

📋 Description

FreeRDP before 3.32.2 contains a memory allocation vulnerability in rdg_receive_packet that allows a malicious RD Gateway to force a 2 GiB client allocation before tunnel authentication. Attackers can send an eight-byte RDG header declaring packet length 0x7FFFFFFF to trigger pre-authentication memory exhaustion and denial of service.

🔗 References (4)

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4vh4-3pc3-32p7
https://nvd.nist.gov/vuln/detail/CVE-2026-121399
https://www.vulncheck.com/advisories/freerdp-before-3.32.2-memory-exhaustion-via-rd-gateway-packet-length
https://github.com/advisories/GHSA-c9xf-6g3r-f7hf