CVE-2021-4140

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

22/12/2022

Last modified:

16/04/2025

Description

It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR

Impact

Vector 3.x

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

Base Score: 10.00 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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

Base Score 3.x

10.00

Severity 3.x

CRITICAL

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:mozilla:firefox::::::::		96.0 (excluding)
cpe:2.3:a:mozilla:firefox_esr::::::::		91.5 (excluding)
cpe:2.3:a:mozilla:thunderbird::::::::		91.5 (excluding)

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

CVE-2021-4140

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools