CVE-2026-27951 — MEDIUM (5.3)

Q: How severe is CVE-2026-27951?

CVE-2026-27951 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-27951?

Check the references section above for vendor advisories and patch information. Affected products include: Freerdp Freerdp.

Vulnerability 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 Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

LOW

Affected Products

Vendor	Product	Versions
Freerdp	Freerdp	< 3.23.0

Related Weaknesses (CWE)

CWE-190

References

https://github.com/FreeRDP/FreeRDP/commit/118afc0b954ba9d5632b7836ad24e454555ed1Patch
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qcfc-ghxr-h927ExploitPatchVendor Advisory

FAQ

What is CVE-2026-27951?

CVE-2026-27951 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 serve...

How severe is CVE-2026-27951?

CVE-2026-27951 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-27951?

Check the references section above for vendor advisories and patch information. Affected products include: Freerdp Freerdp.