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ALSA-2026:6340 — 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-use-after-free (CVE-2026-22856) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852) * freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732) * freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676) * freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491) * freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() (CVE-2026-23948) * freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684) * freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681) * freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683) * freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679) * freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675) * freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages (CVE-2026-31806)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page…

bdu:2026-10004

EUVD-2026-267809

fkie_cve-2026-23948

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, a NULL pointer dereference vulnerability in rdp_write_logon_info_v2() allows a malicious RDP server to crash FreeRDP proxy by sending a specially crafted LogonInfoV2 PDU with cbDomain=0 or cbUserName=0. This vulnerability is fixed in 3.22.0.

OESA-2026-2721 — freerdp security update

Affected: openEuler:20.03-LTS-SP4: freerdp, openEuler:22.03-LTS-SP4: freerdp, openEuler:24.03-LTS-SP1: freerdp, openEuler:24.03-LTS-SP3: 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 NULL pointer dereference vulnerability exists in the rdp_write_logon_info_v2() function of FreeRDP remote desktop protocol implementation, which could be exploited by attackers to cause service crashes.(CVE-2026-23948)

openSUSE-SU-2026:10132-1 — freerdp-3.22.0-1.1 on GA media

freerdp-3.22.0-1.1 on GA media

RHSA-2026:10076 — Red Hat Security Advisory: freerdp security update

freerdp: FreeRDP heap-buffer-overflow freerdp: FreeRDP heap-buffer-overflow freerdp: FreeRDP heap-use-after-free freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() freerdp: FreeRDP has a heap-use-after-free in video_timer freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface freerdp: FreeRDP has a Heap-use-after-free in play_thread freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages

UBUNTU-CVE-2026-23948

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-2026-0244 — FreeRDP: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in FreeRDP ausnutzen, um einen Denial of Service zu verursachen oder potentiell beliebigen Programmcode auszuführen.