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ALSA-2026:54485 — Important: freerdp security update

Affected: AlmaLinux:8: freerdp, AlmaLinux:8: freerdp-devel, AlmaLinux:8: freerdp-libs, AlmaLinux:8: libwinpr, AlmaLinux:8: 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: Arbitrary code execution via malicious RDP files (CVE-2026-64624) * FreeRDP: FreeRDP: Denial of Service via crafted WindowIcon async message (CVE-2026-67299) * FreeRDP: FreeRDP: HTTP Proxy Request Injection via Redirection (CVE-2026-67289) * FreeRDP: FreeRDP: Remote code execution or denial of service via audio input integer overflow (CVE-2026-68580)

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:2026-10989

EUVD-2026-343741

fkie_cve-2026-67299

FreeRDP before 3.29.0 contains a client-side heap use-after-free in the async update message proxy for WINDOW_ICON_ORDER when AsyncUpdate is enabled (e.g. xfreerdp /async-update). In update_message_WindowIcon() a shallow CopyMemory() overwrites a freshly allocated lParam->iconInfo with the parser-owned windowIcon->iconInfo pointer. After the parser callback returns, update_recv_window_info_order() frees window_icon.iconInfo, but the queued async message still retains and later dispatches that stale pointer. A malicious or compromised RDP server sending a crafted RAIL Window Alternate Secondary Order with WINDOW_ORDER_ICON can trigger use-after-free, leading to memory corruption and client crash.

GHSA-jq8c-588g-4wgj

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)

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…

RHSA-2026:54485 — Red Hat Security Advisory: freerdp security update

FreeRDP: FreeRDP: Arbitrary code execution via malicious RDP files FreeRDP: FreeRDP: HTTP Proxy Request Injection via Redirection FreeRDP: FreeRDP: Denial of Service via crafted WindowIcon async message FreeRDP: FreeRDP: Remote code execution or denial of service via audio input integer overflow

RHSA-2026:58710 — Red Hat Security Advisory: freerdp security update

RLSA-2026:54485 — Important: freerdp security update

Affected: Rocky Linux:8: freerdp

Security Fix(es):

* FreeRDP: FreeRDP: Arbitrary code execution via malicious RDP files (CVE-2026-64624)

* FreeRDP: FreeRDP: Denial of Service via crafted WindowIcon async message (CVE-2026-67299)

* FreeRDP: FreeRDP: HTTP Proxy Request Injection via Redirection (CVE-2026-67289)

* FreeRDP: FreeRDP: Remote code execution or denial of service via audio input integer overflow (CVE-2026-68580)

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.

UBUNTU-CVE-2026-67299

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:26.04:LTS: freerdp3

WID-SEC-W-2026-2384 — FreeRDP: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in FreeRDP ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren oder einen Denial-of-Service-Zustand auszulösen.