CVE-2025-4085

high

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.

References

https://www.mozilla.org/security/advisories/mfsa2025-31/

https://www.mozilla.org/security/advisories/mfsa2025-28/

https://bugzilla.mozilla.org/show_bug.cgi?id=1915280

Details

Source: Mitre, NVD

Published: 2025-04-29

Updated: 2026-04-13

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:P/A:N

Severity: High

CVSS v3

Base Score: 7.1

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N