Lucene search
K

Mozilla Firefox ESR < 140.12

🗓️ 16 Jun 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 3 Views

Firefox ESR older than 140.12 on macOS is vulnerable to multiple CVEs per mfsa2026-58.

Related
Refs
Code
ReporterTitlePublishedViews
Family
AlpineLinux
CVE-2026-12289
16 Jun 202611:52
alpinelinux
AlpineLinux
CVE-2026-12298
16 Jun 202611:52
alpinelinux
AlpineLinux
CVE-2026-12299
16 Jun 202611:52
alpinelinux
AlpineLinux
CVE-2026-12311
16 Jun 202611:52
alpinelinux
AlpineLinux
CVE-2026-12313
16 Jun 202611:52
alpinelinux
AlpineLinux
CVE-2026-12328
16 Jun 202611:53
alpinelinux
Circl
CVE-2026-12289
16 Jun 202617:01
circl
Circl
CVE-2026-12304
17 Jun 202605:00
circl
Circl
CVE-2026-12305
17 Jun 202606:00
circl
Circl
CVE-2026-12310
17 Jun 202605:00
circl
Rows per page
#%NASL_MIN_LEVEL 80900
## 
# (C) Tenable, Inc.
#                                  
# The descriptive text and package checks in this plugin were
# extracted from Mozilla Foundation Security Advisory mfsa2026-58.
# The text itself is copyright (C) Mozilla Foundation.
## 

include('compat.inc');

if (description)
{
  script_id(321195);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/16");

  script_cve_id(
    "CVE-2026-12289",
    "CVE-2026-12290",
    "CVE-2026-12291",
    "CVE-2026-12292",
    "CVE-2026-12294",
    "CVE-2026-12295",
    "CVE-2026-12296",
    "CVE-2026-12297",
    "CVE-2026-12298",
    "CVE-2026-12299",
    "CVE-2026-12302",
    "CVE-2026-12304",
    "CVE-2026-12305",
    "CVE-2026-12306",
    "CVE-2026-12307",
    "CVE-2026-12308",
    "CVE-2026-12309",
    "CVE-2026-12310",
    "CVE-2026-12311",
    "CVE-2026-12312",
    "CVE-2026-12313",
    "CVE-2026-12314",
    "CVE-2026-12315",
    "CVE-2026-12324",
    "CVE-2026-12325",
    "CVE-2026-12327",
    "CVE-2026-12328",
    "CVE-2026-12329",
    "CVE-2026-12330"
  );

  script_name(english:"Mozilla Firefox ESR < 140.12");

  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 ESR installed on the remote macOS or Mac OS X host is prior to 140.12. It is, therefore, affected
by multiple vulnerabilities as referenced in the mfsa2026-58 advisory.

  - Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151.
    Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of
    these could have been exploited to run arbitrary code. (CVE-2026-12327)

  - Use-after-free in the Networking: HTTP component. This vulnerability was fixed in Firefox 152, Firefox ESR
    140.12, and Firefox ESR 115.37. (CVE-2026-12291)

  - Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 152 and
    Firefox ESR 140.12. (CVE-2026-12292)

  - Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 152, Firefox ESR
    140.12, and Firefox ESR 115.37. (CVE-2026-12295)

  - Sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152
    and Firefox ESR 140.12. (CVE-2026-12296)

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/mfsa2026-58/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox ESR version 140.12 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  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: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-2026-12327");

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

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox_esr");
  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 ESR");

  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 ESR",
        "type": "app"
      },
      "check_algorithm": "default",
      "constraints": [
        {
          "min_version": "140.0.0",
          "fixed_version": "140.12"
        }
      ]
    }
  ]
};

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

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation