Security Updates for Microsoft Visual Studio Products (June 2026)

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

include('compat.inc');

if (description)
{
  script_id(321156);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/17");

  script_cve_id("CVE-2026-45591");

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

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Visual Studio Products are affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Visual Studio Products are missing a security update. It is, therefore, affected by a denial of service 
vulnerability:

  - Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a 
    network. (CVE-2026-45591)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?15be78c3");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
    - Update to 18.6.3 for Visual Studio 2026 18.6");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/S:U/C:N/I:N/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-2026-45591");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(400);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:visual_studio");
  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': '2026', 'min_version': '18.6', 'fixed_version': '18.6.3'}
];

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