CVE-2025-4085: Potential information leakage and privilege escalation in UITour actor
An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Thunderbirdto a version that resolves this vulnerability.Fixed in 138 - Upgrade
Upgrade
Firefoxto a version that resolves this vulnerability.Fixed in 138
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
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.
How do I fix CVE-2025-4085?
To fix CVE-2025-4085, update Mozilla Firefox or Thunderbird to version 138 or later.
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.
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.
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.