KeePassXC < 2.7.12 Local Privilege Escalation

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

include('compat.inc');

if (description)
{
  script_id(303197);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/25");

  script_cve_id("CVE-2026-4158");
  script_xref(name:"IAVA", value:"2026-A-0247");

  script_name(english:"KeePassXC < 2.7.12 Local Privilege Escalation");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The version of KeePassXC installed on the remote Windows host is prior to 2.7.12. It is, therefore, affected by a
local privilege escalation vulnerability due to loading OpenSSL configuration from an unsecured location. A local
attacker with low-privileged access could leverage this vulnerability to escalate privileges and execute arbitrary
code in the context of KeePassXC when run by a target user on the system.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://github.com/keepassxreboot/keepassxc/security/advisories/GHSA-4gr2-cr97-q9fx
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?38b6d8a1");
  script_set_attribute(attribute:"see_also", value:"https://www.zerodayinitiative.com/advisories/ZDI-26-215/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to KeePassXC version 2.7.12 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:R/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-2026-4158");

  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:"2026/03/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:keepassxc:keepassxc");
  script_set_attribute(attribute:"stig_severity", value:"II");
  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("keepassxc_installed_win.nbin");
  script_require_keys("installed_sw/KeePassXC");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'KeePassXC', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '2.7.12'}
      ]
    }
  ]
};

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