Bug 2453223 (CVE-2026-33952) - CVE-2026-33952 FreeRDP: FreeRDP: Denial of Service via unvalidated authentication length field
Summary: CVE-2026-33952 FreeRDP: FreeRDP: Denial of Service via unvalidated authentica...
Keywords:
Status: NEW
Alias: CVE-2026-33952
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2453257 2453259 2453258
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-30 22:02 UTC by OSIDB Bzimport
Modified: 2026-03-30 23:16 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-03-30 22:02:07 UTC 
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.
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