CVE-2025-0237

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

07/01/2025

Last modified:

13/04/2026

Description

The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.40 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): Low
Availability (A): None

Base Score 3.x

5.40

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:mozilla:firefox:::::esr:::*		128.6.0 (excluding)
cpe:2.3:a:mozilla:firefox::::::::		134.0 (excluding)
cpe:2.3:a:mozilla:thunderbird::::::::		128.6.0 (excluding)
cpe:2.3:a:mozilla:thunderbird::::::::	129.0 (including)	134.0 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-0237

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools