CVE-2025-4085

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1915280	Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-28/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-31/	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::-:::*
	cpe:2.3:a:mozilla:thunderbird:::::-:::*

History

09 May 2025, 19:33

Type	Values Removed	Values Added
CPE		cpe:2.3:a:mozilla:thunderbird:::::-:::* cpe:2.3:a:mozilla:firefox:::::-:::*
References	~~() https://bugzilla.mozilla.org/show_bug.cgi?id=1915280 -~~	() https://bugzilla.mozilla.org/show_bug.cgi?id=1915280 - Permissions Required
References	~~() https://www.mozilla.org/security/advisories/mfsa2025-28/ -~~	() https://www.mozilla.org/security/advisories/mfsa2025-28/ - Vendor Advisory
References	~~() https://www.mozilla.org/security/advisories/mfsa2025-31/ -~~	() https://www.mozilla.org/security/advisories/mfsa2025-31/ - Vendor Advisory
First Time		Mozilla Mozilla thunderbird Mozilla firefox

02 May 2025, 16:15

Type	Values Removed	Values Added
CWE		CWE-269
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.1

02 May 2025, 13:53

Type	Values Removed	Values Added
Summary		(es) Un atacante con control sobre un proceso de contenido podría aprovechar el actor privilegiado UITour para filtrar información confidencial o escalar privilegios. Esta vulnerabilidad afecta a Firefox (versión anterior a la 138) y Thunderbird (versión anterior a la 138).

29 Apr 2025, 14:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-04-29 14:15

Updated : 2025-05-09 19:33

NVD link : CVE-2025-4085

Mitre link : CVE-2025-4085

CVE.ORG link : CVE-2025-4085

JSON object : View

Products Affected

mozilla

thunderbird
firefox

CWE

CWE-269

Improper Privilege Management

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7.1 /10