Security Updates for Microsoft Visual Studio Products (July 2026)

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

include('compat.inc');

if (description)
{
  script_id(327613);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/20");

  script_cve_id(
    "CVE-2026-47300",
    "CVE-2026-47302",
    "CVE-2026-47303",
    "CVE-2026-47304",
    "CVE-2026-47305",
    "CVE-2026-50524",
    "CVE-2026-50525",
    "CVE-2026-50526",
    "CVE-2026-50527",
    "CVE-2026-50528",
    "CVE-2026-50646",
    "CVE-2026-50648",
    "CVE-2026-50649",
    "CVE-2026-50650",
    "CVE-2026-50651",
    "CVE-2026-50659"
  );
  script_xref(name:"IAVA", value:"2026-A-0723");

  script_name(english:"Security Updates for Microsoft Visual Studio Products (July 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. It is, therefore, affected by multiple vulnerabilities:

  - Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate 
    privileges over a network. (CVE-2026-47300)

  - Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service 
    over a network. (CVE-2026-47302)

  - Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate 
    privileges over a network. (CVE-2026-47303)

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-2026-47300");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47302");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47303");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47304");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47305");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50524");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50525");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50526");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50527");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50528");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50646");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50648");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50649");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50650");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50651");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50659");
  # https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-history
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f0f0c75d");
  # 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:"solution", value:
"Microsoft has released the following security updates to address this issue:
    - Update to 17.12.22 for Visual Studio 2022 17.12
    - Update to 17.14.36 for Visual Studio 2022 17.14
    - Update to 18.7.4 for Visual Studio 2026 18.7");
  script_set_cvss_base_vector("CVSS2#AV:N/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:N/AC:L/PR:L/UI:N/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-2026-47300");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-47303");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(59, 90, 94, 116, 121, 302, 303, 345, 347, 502, 636, 693, 770, 863, 1287);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/17");

  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': '17.12', 'fixed_version': '17.12.37502.7','fixed_display': '17.12.22'},
    {'product': '2022', 'min_version': '17.14', 'fixed_version': '17.14.37502.11','fixed_display': '17.14.36'},
    {'product': '2026', 'min_version': '18.7', 'fixed_version': '18.7.12002.237','fixed_display': '18.7.4'}
];

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