Bug 2566000 (CVE-2026-121400) - CVE-2026-121400 freerdp: FreeRDP: Denial of Service via incomplete RD Gateway control packet
Summary: CVE-2026-121400 freerdp: FreeRDP: Denial of Service via incomplete RD Gateway...
Keywords:
Status: NEW
Alias: CVE-2026-121400
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: 2566779 2566780
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-03 17:24 UTC by OSIDB Bzimport
Modified: 2026-11-04 09:36 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-11-03 17:24:00 UTC 
FreeRDP before 3.32.2 contains a denial-of-service vulnerability in rdg_process_control_packet that allows a malicious RD Gateway to exhaust client CPU by sending an incomplete keepalive control packet. Attackers completing the RDG tunnel-open exchange then send an eight-byte header with packetLength 0xFFFF and withhold the body, causing an unbounded no-progress read loop that spins one client thread at full CPU.
Note You need to log in before you can comment on or make changes to this bug.