CVE-2025-4085

Potential information leakage and privilege escalation in UITour actor

State: Published
Severity: 7.1 High
Published: Apr 29, 2025
Updated: Apr 13, 2026
Reserved: Apr 29, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N	CISA-ADP

Weaknesses

CWE-269 Improper Privilege Management

Affected Products

Product	Versions
FirefoxMozilla	138 and laterNot affected
ThunderbirdMozilla	138 and laterNot affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1915280
https://www.mozilla.org/security/advisories/mfsa2025-28/
https://www.mozilla.org/security/advisories/mfsa2025-31/

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