CVE-2026-121842: Privilege escalation in the Reader View component in Firefox for iOS

Published Nov 9, 2026
·
Updated

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

Affected Software

2 affected components
All of the following
Mozilla Firefox=160
Apple iOS

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Firefox for iOS to a version that resolves this vulnerability.

    Fixed in 160.0

Event History

Nov 9, 2026
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
CVE Published
via MITRE·01:42 PM
Data Sourced
via MITRE·01:42 PM
Description

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Company

Resources

Contact

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