vulnerability
MFSA2025-28 Firefox: Security Vulnerabilities fixed in Firefox 138 (CVE-2025-4085)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:S/C:C/I:P/A:N) | Apr 29, 2025 | Apr 30, 2025 | Apr 15, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:S/C:C/I:P/A:N)
Published
Apr 29, 2025
Added
Apr 30, 2025
Modified
Apr 15, 2026
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.
Solution
mozilla-firefox-upgrade-138_0
Rapid7 Labs
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