Mozilla Firefox ESR < 115.43.1

high Nessus Plugin ID 367829

Synopsis

A web browser installed on the remote macOS or Mac OS X host is affected by a vulnerability.

Description

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.

Solution

Upgrade to Mozilla Firefox ESR version 115.43.1 or later.

Plugin Details

Severity: High

ID: 367829

File Name: macos_firefox_115_43_1_esr.nasl

Version: 1.1

Type: Local

Agent: macosx

Family: MacOS X Local Security Checks

Published: 10/20/2026

Updated: 10/20/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 8.24

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2026-113470

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:mozilla:firefox_esr

Required KB Items: installed_sw/Mozilla Firefox ESR

Exploit Ease: No known exploits are available

Patch Publication Date: 10/20/2026

Vulnerability Publication Date: 10/20/2026

Reference Information

CVE: CVE-2026-113470

Detections

Analytics