Mozilla Firefox ESR < 115.32

high Nessus Plugin ID 283708

Language:

Synopsis

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

Description

The version of Firefox ESR installed on the remote Windows host is prior to 115.32. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-02 advisory.

- Use-after-free in the IPC component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, and Firefox ESR < 140.7. (CVE-2026-0882)

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 ESR version 115.32 or later.

Plugin Details

Severity: High

ID: 283708

File Name: mozilla_firefox_115_32_esr.nasl

Version: 1.2

Type: local

Agent: windows

Family: Windows

Published: 1/14/2026

Updated: 1/16/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2026-0882

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_esr

Required KB Items: installed_sw/Mozilla Firefox ESR

Exploit Ease: No known exploits are available

Patch Publication Date: 1/13/2026

Vulnerability Publication Date: 1/13/2026

Reference Information

CVE: CVE-2026-0877, CVE-2026-0879, CVE-2026-0880, CVE-2026-0882, CVE-2026-0886

IAVA: 2026-A-0032

Detections

Analytics