CVE-2025-4083

CVE Details

Release Date:	2025-04-29
Impact:	Important	What is this?

Description

A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.

See more information about CVE-2025-4083 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	8.3
Vector String:	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
Version:	3.1
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	Required
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	Low

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (firefox)	ELSA-2025-4751	2025-05-30
Oracle Linux version 8 (firefox)	ELSA-2025-4458	2025-05-06
Oracle Linux version 8 (thunderbird)	ELSA-2025-4797	2025-05-12
Oracle Linux version 9 (firefox)	ELSA-2025-4443	2025-05-05
Oracle Linux version 9 (firefox)	ELSA-2025-7428	2025-05-21
Oracle Linux version 9 (thunderbird)	ELSA-2025-4460	2025-05-05