BeyondTrust Privilege Management for Windows <= 25.7 Anti-Tamper Bypass (BT26-01)

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

include('compat.inc');

if (description)
{
  script_id(298005);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/06");

  script_cve_id("CVE-2026-1232");
  script_xref(name:"IAVA", value:"2026-A-0109");

  script_name(english:"BeyondTrust Privilege Management for Windows <= 25.7 Anti-Tamper Bypass (BT26-01)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The version of BeyondTrust Privilege Management for Windows installed on the remote host is prior to 25.8. It is,
therefore, affected by a vulnerability as referenced in the BT26-01 advisory.

  - Under certain conditions, a local authenticated user with elevated privileges may be able to bypass the
    product's anti-tamper protections, which could allow access to protected application components and the
    ability to modify product configuration. (CVE-2026-1232)

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://www.beyondtrust.com/trust-center/security-advisories/bt26-01");
  script_set_attribute(attribute:"solution", value:
"Upgrade to BeyondTrust Privilege Management for Windows version 25.8 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:M/C:P/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:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-1232");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/02/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:beyondtrust:privilege_management_for_windows");
  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("beyondtrust_privilege_management_win_installed.nbin");
  script_require_keys("installed_sw/BeyondTrust Privilege Management for Windows");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [
    {'scope': 'target', 'match': {'os': 'windows'}}
  ],
  'checks': [
    {
      'product': {'name': 'BeyondTrust Privilege Management for Windows', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints' : [
        { 'fixed_version' : '25.8' }
      ]
    }
  ]
};

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