CVE-2026-27951 MEDIUM

CVE-2026-27951: FreeRDP has possible Integer overflow in Stream_EnsureCapacity

Vendor Freerdp
Product FreeRDP
Weakness CWE-190
Published February 25, 2026
Last update February 25, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 25, 2026 CVE published
February 25, 2026 Record updated