CVE-2025-4087

CVE Details

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

Description

A vulnerability was identified in Thunderbird where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Thunderbird < 138, and Thunderbird < 128.10.

See more information about CVE-2025-4087 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:	7.6
Vector String:	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Version:	3.1
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	Required
Scope:	Unchanged
Confidentiality Impact:	Low
Integrity Impact:	Low
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 10 (firefox)	ELSA-2025-7506	2025-06-30
Oracle Linux version 10 (thunderbird)	ELSA-2025-7507	2025-06-30
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