Bug 2533968 (CVE-2026-91961) - CVE-2026-91961 FreeRDP: FreeRDP: Denial of Service via URBDRC control-transfer request with invalid OutputBufferSize
Summary: CVE-2026-91961 FreeRDP: FreeRDP: Denial of Service via URBDRC control-transfe...
Keywords:
Status: NEW
Alias: CVE-2026-91961
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: 2534088 2534089
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-15 15:52 UTC by OSIDB Bzimport
Modified: 2026-09-15 18:34 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2026-09-15 15:52:19 UTC 
FreeRDP before 3.31.0 contains a denial-of-service vulnerability in the URBDRC control-transfer request path that fails to validate OutputBufferSize before forwarding to the libusb backend. A malicious RDP server can send a control-transfer request with OutputBufferSize set to 65536, triggering a reachable assertion that terminates the client process.
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