RHSA-2026:3036 - Security Advisory

Topic

An update for freerdp is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

• freerdp: FreeRDP: Heap buffer overflow leading to denial of service and potential code execution from a malicious server. (CVE-2026-23530)
• freerdp: FreeRDP: Denial of Service and potential code execution via use-after-free vulnerability (CVE-2026-23884)
• freerdp: FreeRDP: Heap buffer overflow leads to denial of service and potential code execution (CVE-2026-23533)
• freerdp: FreeRDP: Heap buffer overflow via crafted RDPGFX surface updates leads to denial of service and potential code execution. (CVE-2026-23531)
• freerdp: FreeRDP: Denial of Service and potential code execution via client-side heap buffer overflow (CVE-2026-23532)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64

Fixes

• BZ - 2430877 - CVE-2026-23530 freerdp: FreeRDP: Heap buffer overflow leading to denial of service and potential code execution from a malicious server.
• BZ - 2430880 - CVE-2026-23884 freerdp: FreeRDP: Denial of Service and potential code execution via use-after-free vulnerability
• BZ - 2430886 - CVE-2026-23533 freerdp: FreeRDP: Heap buffer overflow leads to denial of service and potential code execution
• BZ - 2430887 - CVE-2026-23531 freerdp: FreeRDP: Heap buffer overflow via crafted RDPGFX surface updates leads to denial of service and potential code execution.
• BZ - 2430891 - CVE-2026-23532 freerdp: FreeRDP: Denial of Service and potential code execution via client-side heap buffer overflow

CVEs

• CVE-2026-23530
• CVE-2026-23531
• CVE-2026-23532
• CVE-2026-23533
• CVE-2026-23884

References

• https://access.redhat.com/security/updates/classification/#important