CVE-2026-110834

MediumCVSS 6.5/10Last modified Oct 23, 2026

Description

FreeRDP from 2.0.0 before 3.32.0 contains a null pointer dereference vulnerability that allows malicious RDP servers to crash clients by sending out-of-lifecycle serial IRPs. Attackers can send IRP_MJ_READ or IRP_MJ_WRITE before create or after close, causing CommReadFile or CommWriteFile to dereference a null handle and terminate clients using Linux serial redirection.

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-476

Affected software

Vendor	Product	Versions
FreeRDP	FreeRDP	>= 2.0.0, < 3.32.0

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pw4j-ff39-9vjmExploit, Vendor Advisory
https://www.vulncheck.com/advisories/freerdp-2.0.0-before-3.32.0-denial-of-service-via-serial-irp-null-handleThird Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pw4j-ff39-9vjmExploit, Vendor Advisory

Timeline

Published: Oct 14, 2026
Last modified: Oct 23, 2026
NVD status: Analyzed

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