Critical Security Update for FreeRDP: Heap Buffer Overflow and Code Execution Vulnerabilities
Summary
ALSA-2026:2048: Important: freerdp security update. Affects freerdp versions < 2:2.11.7-1.el9_7.1. Fixed in 2:2.11.7-1.el9_7.1. How to fix ↓
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Background
FreeRDP is an open-source implementation of the Remote Desktop Protocol (RDP), allowing users to connect to remote desktops and servers, including Microsoft Windows machines and VirtualBox. It is widely used for remote access and management of systems. However, recent vulnerabilities have been identified that could lead to severe security risks, including denial of service and arbitrary code execution.
Vulnerability Detail
The vulnerabilities in FreeRDP stem from multiple heap buffer overflows and use-after-free issues that can be exploited by malicious servers. These vulnerabilities can lead to denial of service, allowing attackers to crash the client application, and in some cases, execute arbitrary code on the client system. The specific vulnerabilities include CVE-2026-23530, CVE-2026-23884, CVE-2026-23883, CVE-2026-23533, CVE-2026-23531, CVE-2026-23534, and CVE-2026-23532, each posing significant risks to users connecting to compromised RDP servers.
How To Fix
Minimum fixed version
2:2.11.7-1.el9_7.1
This is the first release that contains the fix.
sudo dnf update freerdpTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can avoid connecting to untrusted or unknown RDP servers until the update is applied. Additionally, consider using firewall rules to restrict access to RDP services from untrusted networks.
Conclusion
The identified vulnerabilities in FreeRDP pose significant risks to users, including potential denial of service and arbitrary code execution. It is crucial to update to the latest patched version to ensure the security of your systems. Utilize tools like Vulert to monitor for vulnerabilities in your applications.
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FAQ
FreeRDP is an open-source implementation of the Remote Desktop Protocol (RDP), allowing users to connect to remote desktops and servers.
The vulnerabilities include heap buffer overflows and use-after-free issues that can lead to denial of service and arbitrary code execution.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without needing to sign up.
As a workaround, avoid connecting to untrusted RDP servers and consider implementing firewall rules to restrict access.
Detailed information about the vulnerabilities can be found on the respective CVE pages, which provide insights into the impact and technical details.
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