Out-of-bounds read in FreeRDP - CVE-2026-25941

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Main Vulnerability Database Vulnerabilities #VU125356

Out-of-bounds read in FreeRDP - CVE-2026-25941

Published: April 8, 2026


Vulnerability identifier: #VU125356
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-25941
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to out-of-bounds read in rdpgfx_recv_wire_to_surface_2_pdu in the RDPGFX channel when processing a crafted WIRE_TO_SURFACE_2 PDU with a bitmapDataLength value larger than the actual packet data. A remote attacker can send a specially crafted RDP server response to disclose sensitive information.

User interaction is required because the victim must connect to a malicious server.


Affected software

FreeRDP
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Package Hub 15
openSUSE Leap
openEuler
Ubuntu
Fedora
winpr2-devel
freerdp-devel
libwinpr2
libfreerdp2
libuwac0-0-debuginfo
freerdp-wayland
freerdp-server
uwac0-0-devel
freerdp-debugsource
freerdp-wayland-debuginfo
freerdp
libuwac0-0
freerdp-proxy-debuginfo
libfreerdp2-debuginfo
freerdp-proxy
freerdp-debuginfo
libwinpr2-debuginfo
freerdp-server-debuginfo
libwinpr2-2
winpr-devel
libwinpr2-2-debuginfo
libfreerdp2-2
libfreerdp2-2-debuginfo
freerdp2-debugsource
freerdp2-debuginfo
freerdp2-proxy-debuginfo
freerdp2-server
freerdp2-server-debuginfo
freerdp2
freerdp2-devel
freerdp2-proxy
libwinpr
freerdp-help
libwinpr-devel
freerdp3 (Ubuntu package)
freerdp-sdl
libfreerdp3-3
libfreerdp3-3-debuginfo
librdtk0-0
freerdp-sdl-debuginfo
freerdp-proxy-plugins
libfreerdp-server-proxy3-3
libfreerdp-server-proxy3-3-debuginfo
libwinpr3-3-debuginfo
freerdp-proxy-plugins-debuginfo
librdtk0-0-debuginfo
libwinpr3-3

How to mitigate CVE-2026-25941

Install security update from vendor's website.

FreeRDP - addressed in versions 2.11.8, 3.23.0
winpr2-devel - addressed in versions 2.1.2-12.68.1, 2.4.0-150400.3.52.1, 2.11.7-150700.3.22.1
freerdp-devel - addressed in versions 2.1.2-12.68.1, 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
libwinpr2 - update to 2.4.0-150400.3.52.1
libfreerdp2 - update to 2.4.0-150400.3.52.1
libuwac0-0-debuginfo - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
freerdp-wayland - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
freerdp-server - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
uwac0-0-devel - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1
freerdp-debugsource - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
freerdp-wayland-debuginfo - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
freerdp - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
libuwac0-0 - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
freerdp-proxy-debuginfo - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
libfreerdp2-debuginfo - update to 2.4.0-150400.3.52.1
freerdp-proxy - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
freerdp-debuginfo - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
libwinpr2-debuginfo - update to 2.4.0-150400.3.52.1
freerdp-server-debuginfo - addressed in versions 2.4.0-150400.3.52.1, 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
libwinpr2-2 - addressed in versions 2.11.2-150600.4.26.1, 2.11.7-150700.3.22.1
winpr-devel - addressed in versions 2.11.2-150600.4.26.1, 3.10.3-150700.3.14.1
libwinpr2-2-debuginfo - addressed in versions 2.11.2-150600.4.26.1, 2.11.7-150700.3.22.1
libfreerdp2-2 - addressed in versions 2.11.2-150600.4.26.1, 2.11.7-150700.3.22.1
libfreerdp2-2-debuginfo - addressed in versions 2.11.2-150600.4.26.1, 2.11.7-150700.3.22.1
freerdp2-debugsource - update to 2.11.7-150700.3.22.1
freerdp2-debuginfo - update to 2.11.7-150700.3.22.1
freerdp2-proxy-debuginfo - update to 2.11.7-150700.3.22.1
freerdp2-server - update to 2.11.7-150700.3.22.1
freerdp2-server-debuginfo - update to 2.11.7-150700.3.22.1
freerdp2 - update to 2.11.7-150700.3.22.1
freerdp2-devel - update to 2.11.7-150700.3.22.1
freerdp2-proxy - update to 2.11.7-150700.3.22.1
libwinpr - update to 2.11.8-1
freerdp-debugsource - update to 2.11.8-1
freerdp-devel - update to 2.11.8-1
freerdp-help - update to 2.11.8-1
libwinpr-devel - update to 2.11.8-1
freerdp - update to 2.11.8-1
freerdp-debuginfo - update to 2.11.8-1
freerdp3 (Ubuntu package) - addressed in versions 3.5.1+dfsg1-0ubuntu1.4, 3.16.0+dfsg-2ubuntu0.3
freerdp-sdl - update to 3.10.3-150700.3.14.1
libfreerdp3-3 - update to 3.10.3-150700.3.14.1
libfreerdp3-3-debuginfo - update to 3.10.3-150700.3.14.1
librdtk0-0 - update to 3.10.3-150700.3.14.1
freerdp-sdl-debuginfo - update to 3.10.3-150700.3.14.1
freerdp-proxy-plugins - update to 3.10.3-150700.3.14.1
libfreerdp-server-proxy3-3 - update to 3.10.3-150700.3.14.1
libfreerdp-server-proxy3-3-debuginfo - update to 3.10.3-150700.3.14.1
libwinpr3-3-debuginfo - update to 3.10.3-150700.3.14.1
freerdp-proxy-plugins-debuginfo - update to 3.10.3-150700.3.14.1
librdtk0-0-debuginfo - update to 3.10.3-150700.3.14.1
libwinpr3-3 - update to 3.10.3-150700.3.14.1
freerdp - addressed in versions 3.23.0-1.fc42, 3.23.0-1.fc43, 3.23.0-1.fc44

External References

Related Security Bulletins