Security Updates for Microsoft Windows Admin Center (July 2026)

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

include('compat.inc');

if (description)
{
  script_id(331922);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/05");

  script_cve_id(
    "CVE-2026-56169",
    "CVE-2026-56185",
    "CVE-2026-56196",
    "CVE-2026-56197",
    "CVE-2026-57107",
    "CVE-2026-58631"
  );
  script_xref(name:"IAVA", value:"2026-A-0720");

  script_name(english:"Security Updates for Microsoft Windows Admin Center (July 2026)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Windows Admin Center installed on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Windows Admin Center installed on the remote host is missing security updates. It is,
therefore, affected by multiple vulnerabilities:

  - Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges over a network.
    (CVE-2026-56169)

  - Improper neutralization of special elements used in a command ('command injection') in Windows Admin Center allows
    an authorized attacker to execute code over a network. (CVE-2026-56197)

  - Relative path traversal in Windows Admin Center allows an authorized attacker to execute code over a network.
    (CVE-2026-56196)

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-2026-56169");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56185");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56196");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56197");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57107");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58631");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Windows Admin Center version 2.6.6.18 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-56169");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(23, 77, 94, 285, 287);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:windows_admin_center");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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("windows_admin_center_installed.nbin");
  script_require_keys("installed_sw/Windows Admin Center");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [{'scope': 'target', 'match': {'os': 'windows'}}],
  'checks': [
    {
      'product':{'name': 'Windows Admin Center', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {
          'fixed_version': '2.6.6.18'
        }
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:result);