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ALSA-2026:2048 — Important: freerdp security update

Affected: AlmaLinux:9: freerdp, AlmaLinux:9: freerdp-devel, AlmaLinux:9: freerdp-libs, AlmaLinux:9: libwinpr, AlmaLinux:9: libwinpr-devel

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.

bdu:2026-00656

EUVD-2026-337487

fkie_cve-2026-23531

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, in ClearCodec, when `glyphData` is present, `clear_decompress` calls `freerdp_image_copy_no_overlap` without validating the destination rectangle, allowing an out-of-bounds read/write via crafted RDPGFX surface updates. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.

OESA-2026-1516 — freerdp security update

Affected: openEuler:24.03-LTS-SP1: freerdp

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft&apos;s open specifications. This package provides the client applications xfreerdp. Security Fix(es):

A malicious server can trigger a client-side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code-execution risk depending on allocator behavior and surrounding heap layout.(CVE-2026-22852)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.20.1, a heap out-of-bounds read occurs in the smartcard SetAttrib path when the `cbAttrLen` parameter does not match the actual NDR (Network Data Representation) buffer length. An attacker could potentially exploit this vulnerability to read sensitive information from process memory or cause the application to crash.(CVE-2026-22855)

A malicious server can trigger a client-side use after free, causing a crash (DoS) and potential heap corruption with code-execution risk depending on allocator behavior and surrounding heap layout.(CVE-2026-22856)

A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on…

openSUSE-SU-2026:10107-1 — freerdp-3.21.0-1.1 on GA media

freerdp-3.21.0-1.1 on GA media

RHSA-2026:2714 — Red Hat Security Advisory: freerdp security update

freerdp: FreeRDP: Heap buffer overflow leading to denial of service and potential code execution from a malicious server. freerdp: FreeRDP: Heap buffer overflow via crafted RDPGFX surface updates leads to denial of service and potential code execution. freerdp: FreeRDP: Denial of Service and potential code execution via client-side heap buffer overflow freerdp: FreeRDP: Heap buffer overflow leads to denial of service and potential code execution freerdp: FreeRDP: Denial of Service and potential code execution via use-after-free vulnerability

SUSE-SU-2026:0417-1 — Security update for freerdp

Security update for freerdp

UBUNTU-CVE-2026-23531

Affected: Ubuntu:16.04:LTS: freerdp, Ubuntu:Pro:18.04:LTS: freerdp2, Ubuntu:18.04:LTS: freerdp, Ubuntu:Pro:20.04:LTS: freerdp2, Ubuntu:22.04:LTS: freerdp2, Ubuntu:24.04:LTS: freerdp3, Ubuntu:Pro:24.04:LTS: freerdp2, Ubuntu:25.10: freerdp3

WID-SEC-W-2026-0145 — FreeRDP: Mehrere Schwachstellen ermöglichen DoS und Codeausführung

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in FreeRDP ausnutzen, um einen Denial-of-Service-Zustand zu verursachen oder möglicherweise beliebigen Code auszuführen.