Remote Desktop client for Windows Desktop (September 2026)

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#

include('compat.inc');

if (description)
{
  script_id(350096);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/25");

  script_cve_id(
    "CVE-2026-57098",
    "CVE-2026-78463",
    "CVE-2026-80074",
    "CVE-2026-80077"
  );

  script_name(english:"Remote Desktop client for Windows Desktop (September 2026)");

  script_set_attribute(attribute:"synopsis", value:
"The Remote Desktop client for Windows Desktop installation on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Remote Desktop client for Windows Desktop installation on the remote host is missing security updates. It is,
therefore, affected by multiple vulnerabilities:

  - Improper control of generation of code ('code injection') in Remote Desktop Client allows an unauthorized
    attacker to execute code over a network. (CVE-2026-78463)

  - Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a
    network. (CVE-2026-80074, CVE-2026-80077)

  - Improper verification of cryptographic signature in Windows RDP Client allows an unauthorized attacker to
    disclose information over a network. (CVE-2026-57098)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57098");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78463");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80074");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80077");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Remote Desktop Client version 1.2.7279 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-78463");
  script_cwe_id(94, 122, 347);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/09/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:remote_desktop");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("remote_desktop_installed.nbin");
  script_require_keys("installed_sw/Microsoft Remote Desktop");

  exit(0);
}

include('vcf.inc');
include('vcf_extras.inc');

var appname = "Microsoft Remote Desktop";

var app_info = vcf::get_app_info(app:appname, win_local:TRUE);

vcf::check_granularity(app_info:app_info, sig_segments:3);

var constraints = [
  { 'fixed_version': '1.2.7279' }
];

vcf::microsoft_appstore::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);