CVE-2026-33952: FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, an unvalidated auth_length field read from the network triggers a…

PriorityP433medium6.5CVSS 3.1

AVNACLPRNUIRSUCNINAH

EPSS

0.27%

18.9th percentile

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, an unvalidated auth_length field read from the network triggers a WINPR_ASSERT() failure in rts_read_auth_verifier_no_checks(), causing any FreeRDP client connecting through a malicious RDP Gateway to crash with SIGABRT. This is a pre-authentication denial of service affecting all FreeRDP clients using RPC-over-HTTP gateway transport. The assertion is active in default release builds (WITH_VERBOSE_WINPR_ASSERT=ON). This issue has been patched in version 3.24.2.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
debian	freerdp2	< freerdp3 3.24.2+dfsg-1 (forky)	freerdp3 3.24.2+dfsg-1 (forky)
debian	freerdp3	< freerdp3 3.24.2+dfsg-1 (forky)	freerdp3 3.24.2+dfsg-1 (forky)
freerdp	freerdp	< 3.24.2	3.24.2

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

nvdv4.06.0MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

osv6.0MEDIUM

vendor_debian6.0MEDIUM

vendor_redhat6.0MEDIUM

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