CVE-2025-4085: Potential information leakage and privilege escalation in UITour actor

Published Apr 29, 2025
·
Updated

An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges.

Affected Software

6 affected componentsFixes available
Mozilla Firefox<138
Mozilla Thunderbird<138
Mozilla Thunderbird<138
138
Mozilla Firefox<138
138
Mozilla Firefox<138.0
Mozilla Thunderbird<138.0

Event History

Apr 29, 2025
CVE Published
via Mozilla·12:00 AM
CVE Published
via MITRE·01:13 PM
Data Sourced
via MITRE·01:13 PM
Description
Data Sourced
via NVD·02:15 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2025-4085?

CVE-2025-4085 is classified as a high severity vulnerability due to its potential to leak sensitive information and escalate privileges.

2

How do I fix CVE-2025-4085?

To fix CVE-2025-4085, update Mozilla Firefox or Thunderbird to version 138 or later.

3

What types of software are affected by CVE-2025-4085?

CVE-2025-4085 affects Mozilla Firefox versions prior to 138 and Mozilla Thunderbird versions prior to 138.

4

What could an attacker exploit in CVE-2025-4085?

An attacker could exploit CVE-2025-4085 to leverage the privileged UITour actor for potentially leaking sensitive information.

5

What is the impact of CVE-2025-4085 on users?

The impact of CVE-2025-4085 on users may include unauthorized access to sensitive information and increased vulnerability to privilege escalation.

Contact

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