🛡️ CVE-2026-25941 — freerdp

🟡 CVSS 4.3 — Medium ⚠️ Exploit Public CWE-20 NVD

4.3

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Versions on the 2.x branch prior to to 2.11.8 and on the 3.x branch prior to 3.23.0 have an out-of-bounds read vulnerability in the FreeRDP client's RDPGFX channel that allows a malicious RDP server to read uninitialized heap memory by sending a crafted WIRE_TO_SURFACE_2 PDU with a bitmapDataLength value larger than the actual data in the packet. This can lead to information disclosure or client crashes when a user connects to a malicious server. Versions 2.11.8 and 3.23.0 fix the issue.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

Weakness class

CVE-2026-25941 is classified as CWE-20: Improper Input Validation. The application accepts input without checking that it has the expected form, so malformed values reach code that assumes they are well formed.

Affected software

CVE-2026-25941 is recorded against 1 package.

freerdp (from 3.0.0 up to 3.23.0)

Timeline and source

Published on 25 February 2026 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com

CVE-2026-25941 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Debian Ubuntu

Details

Severity MEDIUM

CVSS Score 4.3

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

CWE CWE-20

Public Exploit ⚠️ Yes

Source NVD

Published 2026-02-25

Updated 2026-08-11

Modified 2026-06-17

Fix URL https://github.com/FreeRDP/FreeRDP/commit/2e3b77e28ac6a398897d28ba464dcc5dfab9c9e2

Affected Packages

Software	From version	Fixed in
freerdp	3.0.0	3.23.0

References

Patch https://github.com/FreeRDP/FreeRDP/commit/2e3b77e28ac6a398897d28ba464dcc5dfab9c9e2

Exploit, Mitigation, Patch, Vendor Advisory https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3546-x645-5cf8

🔗 NVD 🔗 Mitre ✅ Fix / Advisory

Similar Threats

Exploit Protection

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