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Ubuntu 26.04 LTS FreeRDP Critical DoS Issue USN-8432-1 CVE-2026-45700

ubuntu
Calendar Grey June 16, 2026
Dist Ubuntu Esm H88
FreeRDP fixed multiple issues in Ubuntu releases impacting security and possible denial of service attacks.
Several security issues were fixed in FreeRDP.

Summary

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.

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu freerdp CVE-2026-45700

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

Severity
critical
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Critical

Ubuntu Security Notice USN-8432-1

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu freerdp CVE-2026-45700

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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