Microsoft Visual Studio Products (August 2026)

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

include('compat.inc');

if (description)
{
  script_id(338059);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/20");

  script_cve_id(
    "CVE-2026-62871",
    "CVE-2026-62886",
    "CVE-2026-62897",
    "CVE-2026-62898",
    "CVE-2026-62899",
    "CVE-2026-62900",
    "CVE-2026-62901",
    "CVE-2026-62902",
    "CVE-2026-62909",
    "CVE-2026-70354"
  );
  script_xref(name:"IAVA", value:"2026-A-0839");

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

  - Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally. (CVE-2026-62871)

  - Unchecked input for loop condition in .NET allows an unauthorized attacker to deny service over a network.
    (CVE-2026-62901)

  - Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to
    disclose information over a network. (CVE-2026-62902)

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-2026-62871");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62886");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62897");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62898");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62899");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62900");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62901");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62902");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62909");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70354");
  # https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-history
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f0f0c75d");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
    - Update to 17.14.38 for Visual Studio 2022 17.14
    - Update to 18.8.3 for Visual Studio 2026 18.8");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/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-2026-70354");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(122, 190, 212, 248, 416, 444, 606, 693, 787, 829, 918);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/08/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/19");

  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': '17.14.37531.7', 'fixed_display': '17.14.38'}
      ]
    },
    {
      'product': {'name': 'Microsoft Visual Studio', 'type': 'app'},
      'check_algorithm': 'default',
       'requires': [{'scope': 'install', 'match': {'product_version': '2026'}}],
      'constraints': [
        {'min_version': '18.8', 'fixed_version': '18.8.12105.206', 'fixed_display': '18.8.3'}
      ]
    }
  ]
};

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