CVE-2026-121842
Received Received - Intake

Privilege Escalation in Firefox for iOS

Publication date: 2026-11-09

Last updated on: 2026-11-09

Assigner: Mozilla Corporation

Description
Privilege escalation in the Reader View component in Firefox for iOS. This vulnerability was fixed in Firefox for iOS 160.0.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-11-09
Last Modified
2026-11-09
Generated
2026-11-09
AI Q&A
2026-11-09
EPSS Evaluated
N/A
NVD
CVE-2026-121842
EUVD
EUVD-2026-120058

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox_for_ios 160.0

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 Firefox for iOS affecting the Reader View component. It allows an attacker to gain higher privileges within the app, potentially leading to unauthorized access or control. The issue was fixed in Firefox for iOS version 160.0.

Impact Analysis

An attacker could exploit this to gain elevated privileges in the Firefox iOS app, potentially accessing sensitive data, modifying app settings, or performing actions on your behalf without permission.

Mitigation Strategies

Update Firefox for iOS to version 160.0 or later to address the privilege escalation vulnerability in the Reader View component.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-121842. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...