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.
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

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.