CVE-2026-110834

MEDIUMCVSS 6.5

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.

Timeline

Published:October 14th, 2026 11:17 PM

Last modified:October 15th, 2026 4:17 PM

CVSS Scoring

CVSS v3: 6.5 (MEDIUM)

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

Weaknesses (CWE)

CWE-476

References & Reports

Advisories, patches, and third-party reports

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pw4j-ff39-9vjm
https://www.vulncheck.com/advisories/freerdp-2.0.0-before-3.32.0-denial-of-service-via-serial-irp-null-handle
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pw4j-ff39-9vjm

Source: NIST NVD · Data may lag official sources by up to one minute