Microsoft Visual Studio Products (September 2026)

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

include('compat.inc');

if (description)
{
  script_id(344292);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/11");

  script_cve_id(
    "CVE-2026-58649",
    "CVE-2026-69304",
    "CVE-2026-69439",
    "CVE-2026-69522",
    "CVE-2026-69805",
    "CVE-2026-69806",
    "CVE-2026-71328"
  );
  script_xref(name:"IAVA", value:"2026-A-0958");

  script_name(english:"Microsoft Visual Studio Products (September 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:

  - Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges
    over a network. (CVE-2026-69439)

  - Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a
    network. (CVE-2026-69522, CVE-2026-71328)

  - External control of file name or path in .NET allows an unauthorized attacker to elevate privileges over a
    network. (CVE-2026-69805)

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-2026-58649");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69304");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69439");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69522");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69805");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69806");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71328");
  # 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-history
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?afd5face");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
    - Update to 17.14.40 for Visual Studio 2022 17.14
    - Update to 18.9.3 for Visual Studio 2026 18.9");
  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-2026-71328");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(73, 94, 122, 200, 346, 409, 522);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/09/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/09");

  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("installed_sw/Microsoft Visual Studio", "SMB/Registry/Enumerated");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [
    {'scope': 'target', 'match': {'os': 'windows'}}
  ],
  'checks': [
    {
      'product': {'name': 'Microsoft Visual Studio', 'type': 'app'},
      'check_algorithm': 'default',
       'requires': [{'scope': 'install', 'match': {'product_version': '2022'}}],
      'constraints': [
        {'min_version': '17.14', 'fixed_version': '17.14.37628.2', 'fixed_display': '17.14.40'}
      ]
    },
    {
      'product': {'name': 'Microsoft Visual Studio', 'type': 'app'},
      'check_algorithm': 'default',
       'requires': [{'scope': 'install', 'match': {'product_version': '2026'}}],
      'constraints': [
        {'min_version': '18.8', 'fixed_version': '18.8.12128.139', 'fixed_display': '18.9.3'}
      ]
    }
  ]
};

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