Detections
Analytics

Mozilla Firefox ESR < 115.32

high Nessus Plugin ID 283704

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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 ESR installed on the remote macOS or Mac OS X 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.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2026-02/

Plugin Details

Severity: High

ID: 283704

File Name: macos_firefox_115_32_esr.nasl

Version: 1.2

Type: local

Agent: macosx

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