Detections
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Mozilla Firefox < 157.0

critical Nessus Plugin ID 351120

Synopsis

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

Description

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 157.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-97 advisory.

 - Privilege escalation in the Places component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157. (CVE-2026-100824)

 - Sandbox escape due to incorrect boundary conditions in the XPCOM component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. (CVE-2026-100819)

 - Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. (CVE-2026-100756)

 - Use-after-free in the Widget component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. (CVE-2026-100757)

 - Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. (CVE-2026-100758)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Mozilla Firefox version 157.0 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2026-97/

Plugin Details

Severity: Critical

ID: 351120

File Name: macos_firefox_157_0.nasl

Version: 1.1

Type: Local

Agent: macosx

Published: 9/29/2026

Updated: 9/29/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.19

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-2026-100824

CVSS v3

Risk Factor: Critical

Base Score: 9.6

Temporal Score: 8.3

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

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

CVSS Score Source: CVE-2026-100819

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: installed_sw/Mozilla Firefox

Exploit Ease: No known exploits are available

Patch Publication Date: 9/29/2026

Vulnerability Publication Date: 9/29/2026

Reference Information

CVE: CVE-2026-100756, CVE-2026-100757, CVE-2026-100758, CVE-2026-100759, CVE-2026-100760, CVE-2026-100761, CVE-2026-100762, CVE-2026-100763, CVE-2026-100764, CVE-2026-100765, CVE-2026-100766, CVE-2026-100767, CVE-2026-100768, CVE-2026-100769, CVE-2026-100770, CVE-2026-100771, CVE-2026-100772, CVE-2026-100773, CVE-2026-100774, CVE-2026-100775, CVE-2026-100776, CVE-2026-100777, CVE-2026-100778, CVE-2026-100779, CVE-2026-100780, CVE-2026-100781, CVE-2026-100782, CVE-2026-100783, CVE-2026-100784, CVE-2026-100785, CVE-2026-100786, CVE-2026-100787, CVE-2026-100788, CVE-2026-100789, CVE-2026-100790, CVE-2026-100791, CVE-2026-100792, CVE-2026-100793, CVE-2026-100794, CVE-2026-100795, CVE-2026-100796, CVE-2026-100797, CVE-2026-100798, CVE-2026-100799, CVE-2026-100800, CVE-2026-100801, CVE-2026-100802, CVE-2026-100803, CVE-2026-100804, CVE-2026-100805, CVE-2026-100806, CVE-2026-100807, CVE-2026-100808, CVE-2026-100809, CVE-2026-100810, CVE-2026-100811, CVE-2026-100812, CVE-2026-100813, CVE-2026-100814, CVE-2026-100815, CVE-2026-100816, CVE-2026-100817, CVE-2026-100818, CVE-2026-100819, CVE-2026-100820, CVE-2026-100821, CVE-2026-100822, CVE-2026-100824, CVE-2026-100825, CVE-2026-100826, CVE-2026-100828, CVE-2026-100829, CVE-2026-100830, CVE-2026-100831, CVE-2026-96869