FreeRDP before 3.28.0 (affected 3.x through 3.27.1) contains a double-free vulnerability in freerdp_client_rdp_file_apply_to_settings() (client/common/file.c) when parsing the selectedmonitors field of a .rdp connection file. The MonitorIds array is allocated through the settings object, and a raw non-owning pointer to it is freed on the strtoul error path without clearing settings->MonitorIds, leaving it dangling; at teardown freerdp_settings_free() frees the same buffer again. An attacker who convinces a victim to open a crafted .rdp file with oversized monitor tokens can trigger a size-controlled double-free in any FreeRDP CLI client (xfreerdp/sdl-freerdp/wlfreerdp) in the default configuration.

oracle_linux ELSA-2026-54486: ELSA-2026-54486:  freerdp security update (IMPORTANT)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:54486 advisory.

    * FreeRDP: FreeRDP: Remote code execution or denial of service via heap-based buffer overflow     (CVE-2026-64620)

    * FreeRDP: FreeRDP: Double-free vulnerability via crafted .rdp file leading to potential remote code     execution (CVE-2026-64621)

    * 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)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:54486 advisory.

    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 or denial of service via heap-based buffer overflow     (CVE-2026-64620)

    * FreeRDP: FreeRDP: Double-free vulnerability via crafted .rdp file leading to potential remote code     execution (CVE-2026-64621)

    * 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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - FreeRDP before 3.28.0 (affected 3.x through 3.27.1) contains a double-free vulnerability in     freerdp_client_rdp_file_apply_to_settings() (client/common/file.c) when parsing the selectedmonitors field     of a .rdp connection file. The MonitorIds array is allocated through the settings object, and a raw non-     owning pointer to it is freed on the strtoul error path without clearing settings->MonitorIds, leaving it     dangling; at teardown freerdp_settings_free() frees the same buffer again. An attacker who convinces a     victim to open a crafted .rdp file with oversized monitor tokens can trigger a size-controlled double-free     in any FreeRDP CLI client (xfreerdp/sdl-freerdp/wlfreerdp) in the default configuration. (CVE-2026-64621)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
335240	RockyLinux 10 : freerdp (RLSA-2026:54486)	Nessus	Rocky Linux Local Security Checks	Local	critical
335175	RHEL 10 : freerdp (RHSA-2026:54486)	Nessus	Red Hat Local Security Checks	Local	critical
328292	Linux Distros Unpatched Vulnerability : CVE-2026-64621	Nessus	Misc.	Local	critical

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