Microsoft Windows Admin Center Local Privilege Escalation (February 2026)

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

include('compat.inc');

if (description)
{
  script_id(302151);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/16");

  script_cve_id("CVE-2026-26119");
  script_xref(name:"IAVA", value:"2025-A-0932");

  script_name(english:"Microsoft Windows Admin Center Local Privilege Escalation (February 2026)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host contains an application that is affected by a local privilege escalation vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is running a version of Microsoft Windows Admin Center that is missing a security update. It is,
therefore, affected by a local privilege escalation vulnerability. Improper authentication in Windows Admin Center allows
an authorized attacker to elevate privileges over a network. (CVE-2026-26119)

Note that Nessus has not tested for this issue 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-2026-26119");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate update referenced in the Microsoft advisory.");
  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-2026-26119");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/02/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/13");

  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': '2.6.4'
        }
      ]
    }
  ]
};

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