CVE-2026-27951

MEDIUM

FreeRDP < 3.23.0 - Denial of Service via Stream_EnsureCapacity

Title source: llm
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 5.3
EPSS 0.0035
EPSS Percentile 26.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-190
Status published
Products (1)
freerdp/freerdp < 3.23.0
Published Feb 25, 2026
Tracked Since Feb 26, 2026