CVE-2026-121393

MediumCVSS 6.5/10Last modified Nov 3, 2026

Description

FreeRDP from 3.0.0 before 3.32.2 contains a denial of service vulnerability that allows malicious RDP servers to abort clients built with verbose WinPR assertions by sending crafted RemoteFX region rectangles. Attackers can supply a rectangle with x set to 65535 alongside a SurfaceBits destination left of 1, triggering a 16-bit coordinate assertion in rfx_process_message that terminates the client process.

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-617

Affected software

VendorProductVersions
FreeRDPFreeRDP>= 3.0.0, < 3.32.2

References

Timeline

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

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CVE-2026-121393: Medium severity, CVSS 6.5 | Vulnix