Mozilla Firefox < 159.0.1

high Nessus Plugin ID 375480

Synopsis

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

Description

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 159.0.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2026-123 advisory.

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 version 159.0.1 or later.

Plugin Details

Severity: High

ID: 375480

File Name: macos_firefox_159_0_1.nasl

Version: 1.1

Type: Local

Agent: macosx

Family: MacOS X Local Security Checks

Published: 11/3/2026

Updated: 11/3/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.55

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: installed_sw/Mozilla Firefox

Exploit Ease: No known exploits are available

Patch Publication Date: 11/3/2026

Vulnerability Publication Date: 11/3/2026

Reference Information

CVE: CVE-2026-120572

Detections

Analytics