Detections
Analytics

Mozilla Firefox < 138.0.4

critical Nessus Plugin ID 236891

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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 138.0.4. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-36 advisory.

 - An attacker was able to perform an out-of-bounds read or write on a JavaScript object by confusing array index sizes. (CVE-2025-4919)

 - An attacker was able to perform an out-of-bounds read or write on a JavaScript `Promise` object.
 (CVE-2025-4918)

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 138.0.4 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2025-36/

Plugin Details

Severity: Critical

ID: 236891

File Name: macos_firefox_138_0_4.nasl

Version: 1.5

Type: local

Agent: macosx

Published: 5/17/2025

Updated: 11/18/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2025-4919

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

CVSS Score Source: CVE-2025-4918

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: installed_sw/Mozilla Firefox

Exploit Ease: No known exploits are available

Patch Publication Date: 5/17/2025

Vulnerability Publication Date: 5/17/2025

Reference Information

CVE: CVE-2025-4918, CVE-2025-4919

IAVA: 2025-A-0362-S