Use-after-free in FreeRDP - CVE-2026-22856

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Main Vulnerability Database Vulnerabilities #VU122507

Use-after-free in FreeRDP - CVE-2026-22856

Published: February 10, 2026


Vulnerability identifier: #VU122507
CSH Severity: High
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-22856
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in create_irp_thread() function. A remote attacker can trick the victim into connecting to a malicious server and execute arbitrary code on the system.


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 Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
Anolis OS
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
SUSE Package Hub 15
openSUSE Leap
openEuler
Ubuntu
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
freerdp (Red Hat package)
winpr2-devel
freerdp-devel
freerdp-server-debuginfo
freerdp
freerdp-proxy
freerdp-wayland-debuginfo
freerdp-debuginfo
libwinpr2-debuginfo
libfreerdp2-debuginfo
libfreerdp2
freerdp-debugsource
libwinpr2
freerdp-proxy-debuginfo
freerdp-server
freerdp-wayland
libuwac0-0
uwac0-0-devel
libuwac0-0-debuginfo
libwinpr2-2-debuginfo
libfreerdp2-2-debuginfo
libwinpr2-2
winpr-devel
libfreerdp2-2
freerdp-doc
libwinpr-devel
libwinpr
freerdp-libs
freerdp2-debugsource
freerdp2
freerdp2-debuginfo
freerdp2-proxy
freerdp2-devel
freerdp2-server-debuginfo
freerdp2-proxy-debuginfo
freerdp2-server
freerdp-help
freerdp3 (Ubuntu package)

How to mitigate CVE-2026-22856

Install updates from vendor's website.

FreeRDP - update to 3.20.1
freerdp (Red Hat package) - addressed in versions 2.0.0-46.rc4.el8_2.10, 2.1.1-5.el7_9.7, 2.2.0-7.el8_6.5, 2.2.0-12.el8_4, 2.2.0-12.el8_8.5, 2.4.1-3.el9_0.4, 2.4.1-6.el9_2.6, 2.11.2-1.el9_4.5, 2.11.7-1.el9_6.7, 2.11.7-1.el9_7.5, 2.11.7-6.el8_10, 3.10.3-3.el10_0.5, 3.10.3-5.el10_1.5
winpr2-devel - addressed in versions 2.1.2-12.52.1, 2.4.0-150400.3.35.1, 2.11.7-150700.3.3.1
freerdp-devel - addressed in versions 2.1.2-12.52.1, 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
freerdp-server-debuginfo - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
freerdp - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
freerdp-proxy - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
freerdp-wayland-debuginfo - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
freerdp-debuginfo - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
libwinpr2-debuginfo - update to 2.4.0-150400.3.35.1
libfreerdp2-debuginfo - update to 2.4.0-150400.3.35.1
libfreerdp2 - update to 2.4.0-150400.3.35.1
freerdp-debugsource - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
libwinpr2 - update to 2.4.0-150400.3.35.1
freerdp-proxy-debuginfo - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
freerdp-server - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
freerdp-wayland - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
libuwac0-0 - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
uwac0-0-devel - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
libuwac0-0-debuginfo - addressed in versions 2.4.0-150400.3.35.1, 2.11.2-150600.4.6.1
libwinpr2-2-debuginfo - addressed in versions 2.11.2-150600.4.6.1, 2.11.7-150700.3.3.1
libfreerdp2-2-debuginfo - addressed in versions 2.11.2-150600.4.6.1, 2.11.7-150700.3.3.1
libwinpr2-2 - addressed in versions 2.11.2-150600.4.6.1, 2.11.7-150700.3.3.1
winpr-devel - update to 2.11.2-150600.4.6.1
libfreerdp2-2 - addressed in versions 2.11.2-150600.4.6.1, 2.11.7-150700.3.3.1
freerdp-doc - update to 2.11.7-6.0.1
libwinpr-devel - update to 2.11.7-6.0.1
libwinpr - update to 2.11.7-6.0.1
freerdp-libs - update to 2.11.7-6.0.1
freerdp-devel - update to 2.11.7-6.0.1
freerdp - update to 2.11.7-6.0.1
freerdp2-debugsource - update to 2.11.7-150700.3.3.1
freerdp2 - update to 2.11.7-150700.3.3.1
freerdp2-debuginfo - update to 2.11.7-150700.3.3.1
freerdp2-proxy - update to 2.11.7-150700.3.3.1
freerdp2-devel - update to 2.11.7-150700.3.3.1
freerdp2-server-debuginfo - update to 2.11.7-150700.3.3.1
freerdp2-proxy-debuginfo - update to 2.11.7-150700.3.3.1
freerdp2-server - update to 2.11.7-150700.3.3.1
libwinpr-devel - update to 2.11.8-1
freerdp - update to 2.11.8-1
freerdp-debuginfo - 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 - update to 2.11.8-1
freerdp3 (Ubuntu package) - addressed in versions 3.5.1+dfsg1-0ubuntu1.4, 3.16.0+dfsg-2ubuntu0.3

External References

Related Security Bulletins