What’s Vulnerable › Vulnerabilities

CVE-2026-110834: FreeRDP 2.0.0 before 3.32.0 Denial of Service via Serial IRP Null Handle

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-10-14 · updated 2026-10-23
• Weakness: CWE-476

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.

Affected products

• FreeRDP: from 2.0.0 before 3.32.0 — fixed in 3.32.0

How to fix

Upgrade to a fixed version: FreeRDP 3.32.0. Check the vendor advisory for mitigations.

References

• 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

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