RHSA-2026:2048 - Security Advisory

Topic

An update for freerdp is now available for Red Hat Enterprise Linux 9.

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: Arbitrary code execution and denial of service via malicious server (CVE-2026-23883)
• 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: Arbitrary code execution and denial of service via client-side heap buffer overflow (CVE-2026-23534)
• 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 9 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64
• Red Hat CodeReady Linux Builder for x86_64 9 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 9 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 9 aarch64
• Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x

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 - 2430885 - CVE-2026-23883 freerdp: FreeRDP: Arbitrary code execution and denial of service via malicious server
• 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 - 2430888 - CVE-2026-23534 freerdp: FreeRDP: Arbitrary code execution and denial of service via client-side heap buffer overflow
• 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-2026-23534
• CVE-2026-23883
• CVE-2026-23884

References

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