Security Updates for Microsoft Office Products (June 2026) (macOS)

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

include('compat.inc');

if (description)
{
  script_id(321311);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/17");

  script_cve_id(
    "CVE-2026-44817",
    "CVE-2026-44818",
    "CVE-2026-44819",
    "CVE-2026-44820",
    "CVE-2026-44821",
    "CVE-2026-44822",
    "CVE-2026-44823",
    "CVE-2026-44824",
    "CVE-2026-45455",
    "CVE-2026-45456",
    "CVE-2026-45457",
    "CVE-2026-45458",
    "CVE-2026-45459",
    "CVE-2026-45460",
    "CVE-2026-45461",
    "CVE-2026-45463",
    "CVE-2026-45466",
    "CVE-2026-45469",
    "CVE-2026-45471",
    "CVE-2026-45472",
    "CVE-2026-45474",
    "CVE-2026-45475",
    "CVE-2026-45485",
    "CVE-2026-45486",
    "CVE-2026-45643",
    "CVE-2026-45645"
  );

  script_name(english:"Security Updates for Microsoft Office Products (June 2026) (macOS)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Office product installed on the remote host is affected by multiple vulnerabilities");
  script_set_attribute(attribute:"description", value:
"The version of Microsoft Office for Mac installed on the remote host is affected by multiple vulnerabilities as
referenced in the june-16-2026 advisory.

  - Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
    (CVE-2026-44819, CVE-2026-44824, CVE-2026-45461, CVE-2026-45463, CVE-2026-45472, CVE-2026-45474,
    CVE-2026-45475, CVE-2026-45645)

  - Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over
    a network. (CVE-2026-44822, CVE-2026-45455)

  - Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to
    execute code locally. (CVE-2026-44817, CVE-2026-44818, CVE-2026-44820, CVE-2026-44823, CVE-2026-45469)

  - Protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a
    security feature locally. (CVE-2026-45459)

  - Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
    (CVE-2026-44821, CVE-2026-45460, CVE-2026-45485)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac#june-16-2026
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4de225ff");
  script_set_attribute(attribute:"solution", value:
"Update to Office for Mac version 16.110 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:P/A:N");
  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:N/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-2026-44822");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-45474");

  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:"2026/06/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("macosx_office_installed.nbin");
  script_require_keys("Host/MacOSX/Version");
  script_require_ports("installed_sw/Microsoft Outlook", "installed_sw/Microsoft Excel", "installed_sw/Microsoft Word", "installed_sw/Microsoft PowerPoint", "installed_sw/Microsoft OneNote");

  exit(0);
}

include('vcf_extras_office.inc');

var apps = make_list(
  'Microsoft Outlook',
  'Microsoft Excel',
  'Microsoft Word',
  'Microsoft PowerPoint',
  'Microsoft OneNote'
);

var app_info = vcf::microsoft::office_for_mac::get_app_info(apps:apps);

var constraints = [
  { 'fixed_version' : '16.110', 'fixed_display' : 'Version 16.110 (Build 26061317)' }
];

vcf::microsoft::office_for_mac::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_HOLE
);