CVE-2026-27951 — Integer Overflow or Wraparound in Freerdp

CWE-190 — Integer Overflow or Wraparound7 documents7 sources
Severity
7.5HIGHNVD
CNA5.3
EPSS
0.1%
top 76.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Freerdp
Timeline
PublishedFeb 25
Latest updateMar 18

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶CVEListV5freerdp/freerdp< 3.23.0
▶NVDfreerdp/freerdp< 3.23.0

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
CVEList
FreeRDP has possible Integer overflow in Stream_EnsureCapacity↗2026-02-25
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OSV
CVE-2026-27951: FreeRDP is a free implementation of the Remote Desktop Protocol↗2026-02-25
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📋Vendor Advisories

3
Ubuntu
FreeRDP vulnerabilities↗2026-03-18
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Red Hat
freerdp: FreeRDP: Denial of Service via endless blocking loop in Stream_EnsureCapacity↗2026-02-25
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Debian
CVE-2026-27951: freerdp2 - FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to versio...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-27951 Impact, Exploitability, and Mitigation Steps | Wiz↗
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