RHSA-2026:66281 - Security Advisory

Topic

An update for freerdp is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On.

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: Memory disclosure or denial of service via crafted RDP update orders (CVE-2026-67301)
• FreeRDP: FreeRDP: Denial of Service via crafted smartcard cache requests (CVE-2026-67288)
• FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read (CVE-2026-67291)
• FreeRDP: FreeRDP: Heap-buffer-overflow allows arbitrary code execution via crafted RPC response (CVE-2026-55194)

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 Life Cycle Long Life 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64

Fixes

• BZ - 2509994 - CVE-2026-67301 FreeRDP: FreeRDP: Memory disclosure or denial of service via crafted RDP update orders
• BZ - 2510001 - CVE-2026-67288 FreeRDP: FreeRDP: Denial of Service via crafted smartcard cache requests
• BZ - 2510010 - CVE-2026-67291 FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read
• BZ - 2519824 - CVE-2026-55194 FreeRDP: FreeRDP: Heap-buffer-overflow allows arbitrary code execution via crafted RPC response

CVEs

• CVE-2026-55194
• CVE-2026-67288
• CVE-2026-67291
• CVE-2026-67301

References

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