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[USN-8432-1] FreeRDP vulnerabilities

Posted on 16 June 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8432-1
June 16, 2026

freerdp2, freerdp3 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in FreeRDP.

Software Description:
- freerdp3: RDP client for Windows Terminal Services
- freerdp2: RDP client for Windows Terminal Services

Details:

It was discovered that FreeRDP incorrectly handled memory under certain
circumstances, which could lead to an out-of-bounds heap write. An
attacker could possibly use this issue to cause a denial of service or
execute arbitrary code. (CVE-2026-45700)

In addition, this update fixes a regression introduced in USN-8105-1.
The update introduces a complete fix for CVE-2026-22858, CVE-2026-23732
and CVE-2026-25952 in Ubuntu 24.04 LTS and Ubuntu 25.10.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
freerdp-x11 3.24.2+dfsg-1ubuntu1.1
freerdp3-x11 3.24.2+dfsg-1ubuntu1.1
libfreerdp3-3 3.24.2+dfsg-1ubuntu1.1

Ubuntu 25.10
freerdp3-x11 3.16.0+dfsg-2ubuntu0.5
libfreerdp3-3 3.16.0+dfsg-2ubuntu0.5

Ubuntu 24.04 LTS
freerdp2-x11 2.11.5+dfsg1-1ubuntu0.1~esm6
Available with Ubuntu Pro
freerdp3-x11 3.5.1+dfsg1-0ubuntu1.6
libfreerdp2-2t64 2.11.5+dfsg1-1ubuntu0.1~esm6
Available with Ubuntu Pro
libfreerdp3-3 3.5.1+dfsg1-0ubuntu1.6

Ubuntu 22.04 LTS
freerdp2-x11 2.6.1+dfsg1-3ubuntu2.11
libfreerdp2-2 2.6.1+dfsg1-3ubuntu2.11

Ubuntu 20.04 LTS
freerdp2-x11 2.6.1+dfsg1-0ubuntu0.20.04.2+esm4
Available with Ubuntu Pro
libfreerdp2-2 2.6.1+dfsg1-0ubuntu0.20.04.2+esm4
Available with Ubuntu Pro

Ubuntu 18.04 LTS
freerdp2-x11 2.2.0+dfsg1-0ubuntu0.18.04.4+esm6
Available with Ubuntu Pro
libfreerdp2-2 2.2.0+dfsg1-0ubuntu0.18.04.4+esm6
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8432-1
CVE-2026-45700, https://launchpad.net/bugs/2149819

Package Information:
https://launchpad.net/ubuntu/+source/freerdp3/3.24.2+dfsg-1ubuntu1.1
https://launchpad.net/ubuntu/+source/freerdp3/3.16.0+dfsg-2ubuntu0.5
https://launchpad.net/ubuntu/+source/freerdp2/2.6.1+dfsg1-3ubuntu2.11

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