Notepad++ < 8.9.3 libcurl TLS CA Store Caching (CVE-2025-14819)

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

include('compat.inc');

if (description)
{
  script_id(304669);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/14");

  script_cve_id("CVE-2025-14819");

  script_name(english:"Notepad++ < 8.9.3 libcurl TLS CA Store Caching (CVE-2025-14819)");

  script_set_attribute(attribute:"synopsis", value:
"A text editor on the remote Windows host is affected by a TLS certificate verification vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Notepad++ installed on the remote host is prior to 8.9.3. It is, therefore,
affected by a vulnerability:

  - A flaw exists in the bundled libcurl library used by WinGUp, the Notepad++ updater. When
    doing TLS related transfers with reused easy or multi handles and altering the
    CURLSSLOPT_NO_PARTIALCHAIN option, libcurl could accidentally reuse a CA store cached in
    memory for which the partial chain option was reversed. This could make libcurl find and
    accept a trust chain that it otherwise would not. (CVE-2025-14819)

In addition, version 8.9.3 includes fixes for multiple crash regressions and other stability
improvements.

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://cybersecuritynews.com/notepad-v8-9-3-released/");
  # https://community.notepad-plus-plus.org/topic/27469/notepad-release-8-9-3
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1cf60025");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Notepad++ version 8.9.3 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-14819");

  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:"2026/01/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:notepad-plus-plus:notepad\+\+");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  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("notepad_plus_plus_win_installed.nbin");
  script_require_keys("installed_sw/Notepad++", "SMB/Registry/Enumerated");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [
    {'scope': 'target', 'match': {'os': 'windows'}}
  ],
  'checks': [
    {
      'product': {'name': 'Notepad++', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '8.9.3'}
      ]
    }
  ]
};

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