Description
An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability was fixed in Firefox 138 and Thunderbird 138.
Published: 2025-04-29
Score: 7.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2025-12686 An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability affects Firefox < 138 and Thunderbird < 138.
Ubuntu USN Ubuntu USN USN-7991-1 Thunderbird vulnerabilities
History

Mon, 13 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
Description An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability affects Firefox < 138 and Thunderbird < 138. An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability was fixed in Firefox 138 and Thunderbird 138.
Title firefox: thunderbird: Potential information leakage and privilege escalation in UITour actor Potential information leakage and privilege escalation in UITour actor

Fri, 09 May 2025 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
Vendors & Products Mozilla
Mozilla firefox
Mozilla thunderbird

Fri, 02 May 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 02 May 2025 16:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-269
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L'}

cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N'}


Thu, 01 May 2025 02:45:00 +0000

Type Values Removed Values Added
Title firefox: thunderbird: Potential information leakage and privilege escalation in UITour actor
Weaknesses CWE-200
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L'}

threat_severity

Moderate


Tue, 29 Apr 2025 13:30:00 +0000

Type Values Removed Values Added
Description An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability affects Firefox < 138 and Thunderbird < 138.
References

Subscriptions

Mozilla Firefox Thunderbird
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-04-13T14:28:43.317Z

Reserved: 2025-04-29T13:13:38.767Z

Link: CVE-2025-4085

cve-icon Vulnrichment

Updated: 2025-05-02T15:35:36.288Z

cve-icon NVD

Status : Modified

Published: 2025-04-29T14:15:35.187

Modified: 2026-04-13T15:16:59.873

Link: CVE-2025-4085

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-04-29T13:13:39Z

Links: CVE-2025-4085 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses