Bug 2565935 (CVE-2026-121401) - CVE-2026-121401 freerdp: FreeRDP: Denial of Service via unexpected RD Gateway extended authentication packet
Summary: CVE-2026-121401 freerdp: FreeRDP: Denial of Service via unexpected RD Gateway...
Keywords:
Status: NEW
Alias: CVE-2026-121401
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2566781 2566782
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-03 16:34 UTC by OSIDB Bzimport
Modified: 2026-11-04 09:36 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-11-03 16:34:23 UTC 
FreeRDP before 3.32.2 contains a denial of service vulnerability where rdg_process_packet dispatches a PKT_TYPE_EXTENDED_AUTH_MSG without verifying negotiated mode or auth context. A malicious or compromised RD Gateway can send the extended-auth packet before tunnel authentication, triggering a null-pointer dereference that crashes the client.
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