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Mozilla Firefox < 159.0

🗓️ 27 Oct 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 5 Views

Multiple vulnerabilities in Firefox Navigation, Networking, and Audio/Video components.

Related
Refs
Code
#%NASL_MIN_LEVEL 80900
## 
# (C) Tenable, Inc.
#                                  
# The descriptive text and package checks in this plugin were
# extracted from Mozilla Foundation Security Advisory mfsa2026-118.
# The text itself is copyright (C) Mozilla Foundation.
## 

include('compat.inc');

if (description)
{
  script_id(372631);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/27");

  script_cve_id(
    "CVE-2026-100801",
    "CVE-2026-117860",
    "CVE-2026-117861",
    "CVE-2026-117862",
    "CVE-2026-117863",
    "CVE-2026-117864",
    "CVE-2026-117865",
    "CVE-2026-117866",
    "CVE-2026-117867",
    "CVE-2026-117868",
    "CVE-2026-117869",
    "CVE-2026-117870",
    "CVE-2026-117871",
    "CVE-2026-117872",
    "CVE-2026-117873",
    "CVE-2026-117874",
    "CVE-2026-117875",
    "CVE-2026-117876",
    "CVE-2026-117877",
    "CVE-2026-117878",
    "CVE-2026-117879",
    "CVE-2026-117880",
    "CVE-2026-117881",
    "CVE-2026-117882",
    "CVE-2026-117883",
    "CVE-2026-117884",
    "CVE-2026-117885",
    "CVE-2026-117886",
    "CVE-2026-117887",
    "CVE-2026-117888",
    "CVE-2026-117889",
    "CVE-2026-117890",
    "CVE-2026-117891",
    "CVE-2026-117892",
    "CVE-2026-117893",
    "CVE-2026-117894",
    "CVE-2026-117895",
    "CVE-2026-117896",
    "CVE-2026-117897",
    "CVE-2026-117898",
    "CVE-2026-117899",
    "CVE-2026-117900",
    "CVE-2026-117901",
    "CVE-2026-117902",
    "CVE-2026-117903",
    "CVE-2026-117904",
    "CVE-2026-117905",
    "CVE-2026-117906",
    "CVE-2026-117907",
    "CVE-2026-117908",
    "CVE-2026-117909",
    "CVE-2026-117910",
    "CVE-2026-117911",
    "CVE-2026-117912",
    "CVE-2026-117913",
    "CVE-2026-117914",
    "CVE-2026-117915",
    "CVE-2026-117916",
    "CVE-2026-117917",
    "CVE-2026-117918",
    "CVE-2026-117919",
    "CVE-2026-117920",
    "CVE-2026-117921",
    "CVE-2026-117922",
    "CVE-2026-117923",
    "CVE-2026-117924",
    "CVE-2026-117925",
    "CVE-2026-117926",
    "CVE-2026-117927",
    "CVE-2026-117928",
    "CVE-2026-117929",
    "CVE-2026-117930",
    "CVE-2026-117931",
    "CVE-2026-117932",
    "CVE-2026-117933",
    "CVE-2026-117934",
    "CVE-2026-117935",
    "CVE-2026-117936",
    "CVE-2026-117937",
    "CVE-2026-117938",
    "CVE-2026-117939",
    "CVE-2026-117940",
    "CVE-2026-117941",
    "CVE-2026-117942",
    "CVE-2026-117943",
    "CVE-2026-117944",
    "CVE-2026-117945",
    "CVE-2026-117946",
    "CVE-2026-117947",
    "CVE-2026-117948",
    "CVE-2026-117949",
    "CVE-2026-117950",
    "CVE-2026-117951",
    "CVE-2026-117952",
    "CVE-2026-117953",
    "CVE-2026-117954",
    "CVE-2026-117955",
    "CVE-2026-117956",
    "CVE-2026-117957",
    "CVE-2026-117958",
    "CVE-2026-117959",
    "CVE-2026-117960",
    "CVE-2026-117961",
    "CVE-2026-117962",
    "CVE-2026-117963",
    "CVE-2026-117964",
    "CVE-2026-117965",
    "CVE-2026-117966",
    "CVE-2026-117967",
    "CVE-2026-117968",
    "CVE-2026-117969",
    "CVE-2026-117970",
    "CVE-2026-117971",
    "CVE-2026-117972",
    "CVE-2026-117973",
    "CVE-2026-117974",
    "CVE-2026-117975",
    "CVE-2026-117976",
    "CVE-2026-117977",
    "CVE-2026-117978",
    "CVE-2026-117979",
    "CVE-2026-117980",
    "CVE-2026-117981",
    "CVE-2026-117982",
    "CVE-2026-117983",
    "CVE-2026-117984",
    "CVE-2026-117985",
    "CVE-2026-117986",
    "CVE-2026-117987",
    "CVE-2026-117988",
    "CVE-2026-117989",
    "CVE-2026-117990",
    "CVE-2026-117991",
    "CVE-2026-117992",
    "CVE-2026-117993",
    "CVE-2026-117994",
    "CVE-2026-117995",
    "CVE-2026-117996",
    "CVE-2026-117997",
    "CVE-2026-117998",
    "CVE-2026-117999",
    "CVE-2026-118000",
    "CVE-2026-118002",
    "CVE-2026-118003",
    "CVE-2026-118004",
    "CVE-2026-118005",
    "CVE-2026-118006",
    "CVE-2026-118007",
    "CVE-2026-118008",
    "CVE-2026-118009",
    "CVE-2026-118010",
    "CVE-2026-118011",
    "CVE-2026-118012",
    "CVE-2026-118013",
    "CVE-2026-118014",
    "CVE-2026-118015",
    "CVE-2026-118016",
    "CVE-2026-118017",
    "CVE-2026-118019",
    "CVE-2026-118020",
    "CVE-2026-118021",
    "CVE-2026-118022",
    "CVE-2026-118023",
    "CVE-2026-118024",
    "CVE-2026-118025",
    "CVE-2026-118026"
  );

  script_name(english:"Mozilla Firefox < 159.0");

  script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Firefox installed on the remote macOS or Mac OS X host is prior to 159.0. It is, therefore, affected by
multiple vulnerabilities as referenced in the mfsa2026-118 advisory.

  - Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 159.
    (CVE-2026-118008)

  - Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 159,
    Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6. (CVE-2026-117860)

  - Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 159, Firefox ESR
    153.6, Thunderbird 159, and Thunderbird 153.6. (CVE-2026-117861)

  - Privilege escalation due to incorrect boundary conditions in the Networking component. This vulnerability
    was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
    (CVE-2026-117862)

  - Information disclosure due to uninitialized memory in the Audio/Video component. This vulnerability was
    fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
    (CVE-2026-117863)

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://www.mozilla.org/en-US/security/advisories/mfsa2026-118/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox version 159.0 or later.");
  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-2026-118008");

  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:"2026/09/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox");
  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_firefox_installed.nasl");
  script_require_keys("installed_sw/Mozilla Firefox");

  exit(0);
}

include('vdf.inc');

# @tvdl-content-verify-only
var vuln_data = {
  "metadata": {
    "spec_version": "1.0"
  },
  "requires": [
    {
      "scope": "target",
      "match": {
        "os": "macos"
      }
    }
  ],
  "checks": [
    {
      "product": {
        "name": "Mozilla Firefox",
        "type": "app"
      },
      "check_algorithm": "default",
      "constraints": [
        {
          "fixed_version": "159.0"
        }
      ]
    }
  ]
};

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

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27 Oct 2026 00:00Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.18.8
EPSS0.0035
SSVC
5