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Mozilla Firefox ESR < 115.43.1

🗓️ 20 Oct 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 3 Views

Mozilla Firefox ESR blocks compromised intermediate eMudhra certificates via OneCRL.

Related
Refs
Code
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-113470
20 Oct 202613:09
–circl
cve
CVE
CVE-2026-113470
20 Oct 202612:58
–cve
cvelist
Cvelist
CVE-2026-113470 Cryptographic issue in the Security Block-lists, Allow-lists, and other State component
20 Oct 202612:58
–cvelist
debiancve
Debian CVE
CVE-2026-113470
20 Oct 202612:58
–debiancve
oraclelinux
Oracle linux
ca-certificates security update
20 Oct 202600:00
–oraclelinux
oraclelinux
Oracle linux
ca-certificates security update
20 Oct 202600:00
–oraclelinux
oraclelinux
Oracle linux
ca-certificates security update
20 Oct 202600:00
–oraclelinux
euvd
EUVD
EUVD-2026-104991
20 Oct 202612:58
–euvd
nessus
Tenable Nessus
Mozilla Firefox ESR < 153.5.1
20 Oct 202600:00
–nessus
nessus
Tenable Nessus
Mozilla Firefox < 158.0.1
20 Oct 202600:00
–nessus
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 mfsa2026-113.
# The text itself is copyright (C) Mozilla Foundation.
## 

include('compat.inc');

if (description)
{
  script_id(367829);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/20");

  script_cve_id("CVE-2026-113470");

  script_name(english:"Mozilla Firefox ESR < 115.43.1");

  script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote macOS or Mac OS X host is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.43.1. It is, therefore,
affected by a vulnerability as referenced in the mfsa2026-113 advisory.

  - Mozilla blocked compromised intermediate eMudhra certificates via OneCRL on the 17th of October which was
    distributed to clients via RemoteSettings the same day. This update contains the updated OneCRL block
    list, ensuring clients will block the compromised certificates even if RemoteSettings is disabled by
    policy or otherwise unavailable in the user's network environment. (CVE-2026-113470)

Note that Nessus has not tested for this issue 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/mfsa2026-113/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox ESR version 115.43.1 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-113470");

  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:"2026/10/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/20");

  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": "115.0.0",
          "fixed_version": "115.43.1"
        }
      ]
    }
  ]
};

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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20 Oct 2026 00:00Current
6Medium risk
Vulners AI Score6
CVSS 3.15.4
SSVC
3