CVE-2026-121400

MediumCVSS 6.5/10Last modified Nov 3, 2026

Description

FreeRDP before 3.32.2 contains a denial-of-service vulnerability in rdg_process_control_packet that allows a malicious RD Gateway to exhaust client CPU by sending an incomplete keepalive control packet. Attackers completing the RDG tunnel-open exchange then send an eight-byte header with packetLength 0xFFFF and withhold the body, causing an unbounded no-progress read loop that spins one client thread at full CPU.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-835

Affected software

VendorProductVersions
FreeRDPFreeRDP< 3.32.2

References

Timeline

Published
Nov 3, 2026
Last modified
Nov 3, 2026
NVD status
Analyzed

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CVE-2026-121400: Medium severity, CVSS 6.5 | Vulnix