FreeRDP before 3.32.0 fails to close prior serial handles in serial_process_irp_create, allowing a malicious RDP server to exhaust file descriptors. Attackers can send repeated serial IRP_MJ_CREATE requests to accumulate descriptors and terminate the client at the CommReadFile FD_SETSIZE assertion.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mqxv-c882-m8w9 Exploit, Vendor Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mqxv-c882-m8w9 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 20:23
- StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-23 20:23
- StatusReceived → Undergoing AnalysisNVD modified 2026-10-15 15:54
- First seenCVSS 8.2NVD 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-mqxv-c882-m8w9 Exploit, Vendor Advisory
- https://www.vulncheck.com/advisories/freerdp-before-3.32.0-denial-of-service-via-serial-irp-mj-create Third Party Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mqxv-c882-m8w9 Exploit, Vendor Advisory