CVE-2026-27951

Published: Feb 25, 2026Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the function `Stream_EnsureCapacity` can create an endless blocking loop. This may affect all client and server implementations using `FreeRDP`. For practical exploitation this will only work on 32bit systems where the available physical memory is `>= SIZE_MAX`. Version 3.23.0 contains a patch. No known workarounds are available.

Affected (1)

Products: Freerdp: Freerdp

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Freerdp Freerdp	Before 3.23.0

Related CWEs

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (2)

https://github.com/FreeRDP/FreeRDP/commit/118afc0b954ba9d5632b7836ad24e454555ed113

Source: security-advisories@github.com

Patch

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qcfc-ghxr-h927

Source: security-advisories@github.com

ExploitPatchVendor Advisory

Timeline

No history available yet.