Mozilla Firefox < 138.0.4

high Nessus Plugin ID 236890

Synopsis

A web browser installed on the remote Windows host is affected by multiple vulnerabilities.

Description

The version of Firefox installed on the remote Windows 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-2025-4921)

- An attacker was able to perform an out-of-bounds read or write on a JavaScript `Promise` object.
(CVE-2025-4920)

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.

Plugin Details

Severity: High

ID: 236890

File Name: mozilla_firefox_138_0_4.nasl

Version: 1.1

Type: local

Agent: windows

Family: Windows

Published: 5/17/2025

Updated: 5/17/2025

Supported Sensors: Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2025-4921

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: Mozilla/Firefox/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 5/17/2025

Vulnerability Publication Date: 5/17/2025

Reference Information

CVE: CVE-2025-4920, CVE-2025-4921

Detections

Analytics