FreeRDP versions from 3.0.0 before 3.32.0 contain a null pointer dereference in the rdpsnd channel when a fragment sets CHANNEL_FLAG_LAST without CHANNEL_FLAG_FIRST. A malicious RDP server can send a malformed rdpsnd PDU on a fresh channel to crash the client and cause denial of service.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3mq5-xh88-9v62 Exploit, Vendor Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3mq5-xh88-9v62 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 20:15
- StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-23 20:15
- 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-3mq5-xh88-9v62 Exploit, Vendor Advisory
- https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-null-pointer-dereference-via-rdpsnd-fragment Third Party Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3mq5-xh88-9v62 Exploit, Vendor Advisory