FreeRDP 2.3.0 before 3.32.0 dereferences a NULL stream in rdg_process_close_packet in libfreerdp/core/gateway/rdg.c because rdg_process_control_packet accepts a header-only PKT_TYPE_CLOSE_CHANNEL packet and passes the null payload without a check. A malicious or compromised RD Gateway can send an eight-byte CLOSE_CHANNEL header to crash a connecting FreeRDP client.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f46f-pxh9-w2rh Exploit, Vendor Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f46f-pxh9-w2rh 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 2026-10-26 20:20
- StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-26 20:20
- StatusAwaiting Analysis → Undergoing AnalysisNVD modified 2026-10-16 22:17
- First seenCVSS 7.1NVD modified 2026-10-14 20:10
Affected (CPE criteria) 1
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
References 3
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f46f-pxh9-w2rh Exploit, Vendor Advisory
- https://www.vulncheck.com/advisories/freerdp-2.3.0-before-3.32.0-null-pointer-dereference-via-rd-gateway-close-channel-packet Third Party Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f46f-pxh9-w2rh Exploit, Vendor Advisory