High severity7.1NVD Advisory· Published Apr 29, 2025· Updated Apr 13, 2026

CVE-2025-4085

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.

Affected products

Mozilla Corporation/Firefox
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
Range: <138.0
Mozilla Corporation/Thunderbird
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
Range: <138.0

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

www.mozilla.org/security/advisories/mfsa2025-28/nvdVendor Advisory
www.mozilla.org/security/advisories/mfsa2025-31/nvdVendor Advisory
bugzilla.mozilla.org/show_bug.cginvdPermissions Required

News mentions

No linked articles in our index yet.

cvss	0.461
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000