Security Updates for Microsoft Visual Studio Products (February 2026)

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

include('compat.inc');

if (description)
{
  script_id(298992);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/16");

  script_cve_id("CVE-2026-21256", "CVE-2026-21257");
  script_xref(name:"IAVA", value:"2026-A-0119");

  script_name(english:"Security Updates for Microsoft Visual Studio Products (February 2026)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Visual Studio Products are affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Visual Studio Products are missing security updates. They are, therefore, affected by 
multiple vulnerabilities, including:

  - Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual 
  Studio allows an unauthorized attacker to execute code over a network. (CVE-2026-21256)

  - Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual 
  Studio allows an authorized attacker to elevate privileges over a network. (CVE-2026-21257)

Note that Nessus has not tested for these issues 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-2026-21256");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21257");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
    - Update to 17.14.26 for Visual Studio 2022 17.14
    - Update to 18.3.0 for Visual Studio 2022 18.0");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:N/AC:L/PR:N/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-2026-21256");

  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:"2026/02/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:visual_studio");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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("ms_bulletin_checks_possible.nasl", "microsoft_visual_studio_installed.nbin");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible", "installed_sw/Microsoft Visual Studio", "SMB/Registry/Enumerated");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include('vcf_extras_visual_studio.inc');

get_kb_item_or_exit('SMB/Registry/Enumerated');

var app_info = vcf::visual_studio::get_app_info();

var constraints = [
    {'product': '2022', 'min_version': '17.14', 'fixed_version': '17.14.36930.0','fixed_display': '17.14.26'},
    {'product': '2022', 'min_version': '18.0', 'fixed_version': '18.3.11505.172','fixed_display': '18.3.0'},];

vcf::visual_studio::check_version_and_report(
  app_info: app_info,
  constraints: constraints,
  severity: SECURITY_HOLE
);