Vim < 9.2.0845 Command Injection (CVE-2026-73073)

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

include('compat.inc');

if (description)
{
  script_id(339352);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/25");

  script_cve_id("CVE-2026-73073");

  script_name(english:"Vim < 9.2.0845 Command Injection (CVE-2026-73073)");

  script_set_attribute(attribute:"synopsis", value:
"A text editor installed on the remote host is affected by a command injection vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Vim installed on the remote host is prior to 9.2.0845. It is, therefore, affected by a command
injection vulnerability:

  - StructMembers() in runtime/autoload/ccomplete.vim constructs and executes a vimgrep command using an insufficiently
    escaped typeref: or typename: value from a tags file, allowing an unterminated collection followed by a command
    separator to execute arbitrary Ex and operating-system commands when a user invokes C omni-completion with CTRL-X
    CTRL-O on a member access whose type is resolved from that tags file. (CVE-2026-73073)

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://github.com/vim/vim/security/advisories/GHSA-cx73-phcg-3j5g");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Vim version 9.2.0845 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A: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_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-73073");
  script_cwe_id(829, 94);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:vim:vim");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_set_attribute(attribute:"agent", value:"all");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("vim_win_installed.nbin", "vim_nix_installed.nbin");
  script_require_keys("installed_sw/Vim");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Vim', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '9.2.0845'}
      ]
    }
  ]
};

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