Bug 2533907 (CVE-2026-91955) - CVE-2026-91955 FreeRDP: FreeRDP: Denial of Service via crafted desktop dimensions
Summary: CVE-2026-91955 FreeRDP: FreeRDP: Denial of Service via crafted desktop dimens...
Keywords:
Status: NEW
Alias: CVE-2026-91955
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2534076 2534077
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-15 15:47 UTC by OSIDB Bzimport
Modified: 2026-09-15 18:24 UTC (History)
2 users (show)

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

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Description OSIDB Bzimport 2026-09-15 15:47:04 UTC 
FreeRDP before 3.31.0 fails to validate client-supplied DesktopWidth and DesktopHeight values during GCC negotiation, allowing remote attackers to crash the server. Attackers can send crafted RDP packets with zero or oversized dimensions to trigger division-by-zero or assertion failures in multifragment update capability calculations, terminating the server process.
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