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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pw4j-ff39-9vjm Exploit, Vendor Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pw4j-ff39-9vjm Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 4
- Cpes+1 CPE criteria (now 1)NVD modified 2026-10-23 20:52
- StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-23 20:52
- StatusReceived → Undergoing AnalysisNVD modified 2026-10-15 16:17
- First seenCVSS 7.1NVD modified 2026-10-14 23:17
Affected (CPE criteria) 1
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
References 3
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pw4j-ff39-9vjm Exploit, Vendor Advisory
- https://www.vulncheck.com/advisories/freerdp-2.0.0-before-3.32.0-denial-of-service-via-serial-irp-null-handle Third Party Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pw4j-ff39-9vjm Exploit, Vendor Advisory