CVE-2026-117981
Received Received - Intake

Privilege Escalation in Firefox Toolkit

Publication date: 2026-10-27

Last updated on: 2026-10-27

Assigner: Mozilla Corporation

Description
Privilege escalation in the Toolkit component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-27
Last Modified
2026-10-27
Generated
2026-10-27
AI Q&A
2026-10-27
EPSS Evaluated
N/A
NVD
CVE-2026-117981
EUVD
EUVD-2026-111012

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a privilege escalation vulnerability in the Toolkit component of Firefox. It allows an attacker to gain higher privileges than intended, potentially leading to unauthorized system access or control.

Impact Analysis

If exploited, this vulnerability could let attackers perform actions with elevated permissions, such as installing malware, accessing sensitive data, or modifying system settings. Users of affected Firefox versions are at risk until they update.

Mitigation Strategies

Update Firefox to version 159 or later and Firefox ESR to version 153.6 or later to address the privilege escalation vulnerability in the Toolkit component.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-117981. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart