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ALSA-2026:36203 — Important: freerdp security update

Affected: AlmaLinux:10: freerdp, AlmaLinux:10: freerdp-devel, AlmaLinux:10: freerdp-libs, AlmaLinux:10: freerdp-server, AlmaLinux:10: libwinpr, AlmaLinux:10: 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: Remote code execution via heap-buffer-overflow in gdi_CacheToSurface (CVE-2026-40033) * freerdp: FreeRDP: Arbitrary code execution or denial of service via heap use-after-free in RDPEAR NDR parser (CVE-2026-44422) * freerdp: FreeRDP: Out-of-bounds write in planar bitmap decoder allows arbitrary code execution (CVE-2026-45700) * freerdp: FreeRDP: Arbitrary code execution via crafted RDPGFX PDUs (CVE-2026-44421) * freerdp: FreeRDP: Arbitrary code execution and denial of service via heap-buffer-overflow (CVE-2026-44420)

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:2026-10466

EUVD-2026-342278

fkie_cve-2026-45700

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's planar bitmap decoder has an out-of-bounds heap write when decoding RLE planar data. In libfreerdp/codec/planar.c, freerdp_bitmap_decompress_planar() validates the X destination coordinate nXDst against the caller-provided destination stride (nDstStep) even when it is writing into the internal temp buffer pTempData. An attacker can bypass the check with a large nDstStep and a large nXDst, causing planar_decompress_plane_rle() to write past the end of pTempData. This vulnerability is fixed in 3.26.0.

OESA-2026-3853 — freerdp security update

Affected: openEuler:24.03-LTS-SP4: 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):

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.20.1, a global-buffer-overflow vulnerability was observed in FreeRDP's Base64 decoding path. The root cause is the implementation-defined signedness of the `char` type: on Arm/AArch64 builds, plain `char` is treated as unsigned, causing the guard condition `c <= 0` to potentially be optimized by the compiler into a simple `c != 0` check. Consequently, non-ASCII bytes (e.g., 0x80-0xFF) may bypass the intended range restriction and be used as an index into a global lookup table, resulting in out-of-bounds access. A malicious server can exploit this to trigger a client-side crash, leading to a denial of service.(CVE-2026-22858)

openSUSE-SU-2026:10948-1 — freerdp-3.26.0-3.1 on GA media

freerdp-3.26.0-3.1 on GA media

RHSA-2026:46383 — Red Hat Security Advisory: freerdp security update

freerdp: FreeRDP: Out-of-bounds write in planar bitmap decoder allows arbitrary code execution

RLSA-2026:36203 — Important: freerdp security update

Affected: Rocky Linux:10: freerdp

Security Fix(es):

* freerdp: FreeRDP: Remote code execution via heap-buffer-overflow in gdi_CacheToSurface (CVE-2026-40033)

* freerdp: FreeRDP: Arbitrary code execution or denial of service via heap use-after-free in RDPEAR NDR parser (CVE-2026-44422)

* freerdp: FreeRDP: Out-of-bounds write in planar bitmap decoder allows arbitrary code execution (CVE-2026-45700)

* freerdp: FreeRDP: Arbitrary code execution via crafted RDPGFX PDUs (CVE-2026-44421)

* freerdp: FreeRDP: Arbitrary code execution and denial of service via heap-buffer-overflow (CVE-2026-44420)

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.

SUSE-SU-2026:22194-1 — Security update for freerdp

Security update for freerdp

UBUNTU-CVE-2026-45700

Affected: Ubuntu:Pro:18.04:LTS: freerdp2, 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, Ubuntu:26.04:LTS: freerdp3

WID-SEC-W-2026-2264 — FreeRDP: Schwachstelle ermöglicht Codeausführung

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in FreeRDP ausnutzen, um beliebigen Programmcode auszuführen.