Security Updates for Azure Connected Machine Agent < 1.63 (May 2026)

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

include('compat.inc');

if (description)
{
  script_id(314929);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/24");

  script_cve_id("CVE-2026-40381");

  script_name(english:"Security Updates for Azure Connected Machine Agent < 1.63 (May 2026)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Azure Connected Machine Agent installation on the remote host is affected by an elevation of privilege vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Azure Connected Machine Agent installation on the remote host is missing security updates. It is,
therefore, affected by an elevation of privilege vulnerability:

  - Improper access control in Azure Connected Machine Agent allows an authorized attacker to elevate privileges
    locally. (CVE-2026-40381)

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-2026-40381");
  script_set_attribute(attribute:"solution", value:
"Update to Azure Connected Machine Agent version 1.63 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/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-2026-40381");

  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:"2026/05/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/05/15");

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

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

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

  script_dependencies("microsoft_azure_connected_machine_agent_win_installed.nbin", "azure_connected_machine_agent_nix_installed.nbin");
  script_require_keys("installed_sw/Microsoft Azure Connected Machine Agent");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Microsoft Azure Connected Machine Agent', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
            { 'fixed_version' : '1.63' }
      ]
    }
  ]
};
var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING);
vdf::handle_check_and_report_errors(vdf_result:result);