PT-2026-92065 · Freerdp+1 · Freerdp+1

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CVE-2026-91946

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Published

2026-09-15

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Updated

2026-09-24

CVSS v4.0

7.1

High

VectorAV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.31.0
Description An information disclosure issue exists in the RDPGFX server's ResetGraphics PDU serializer. The component fails to initialize padding bytes within the fixed 340-byte wire format. This allows attackers to receive uninitialized heap memory, which may include live pointers and GLib function addresses transmitted in the PDU. This leak can be used to defeat heap ASLR (Address Space Layout Randomization), a security technique that randomizes memory addresses to make exploitation harder, and disclose the GLib module base address.
Recommendations Update to version 3.31.0 or later.

Exploit

Fix

Use of Uninitialized Resource

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Weakness Enumeration

Related Identifiers

CVE-2026-91946
GHSA-R7JX-J9H7-J4XJ

Affected Products

Freerdp
Ubuntu