CVE-2026-8945

Analyzed Analyzed - Analysis Complete

Sandbox Escape in Firefox and Firefox Focus for Android

Publication date: 2026-05-19

Last updated on: 2026-05-21

Assigner: Mozilla Corporation

Description

Sandbox escape in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 151.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-05-19

Last Modified

2026-05-21

Generated

2026-06-30

AI Q&A

2026-05-19

EPSS Evaluated

2026-06-28

NVD

CVE-2026-8945

EUVD

EUVD-2026-30897

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	to 151.0.0 (exc)
mozilla	firefox_focus	to 151.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-693	The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Attack-Flow Graph

Executive Summary

This vulnerability is a sandbox escape in Firefox and Firefox Focus for Android. A sandbox escape means that an attacker could potentially break out of the restricted environment (sandbox) that the browser uses to isolate processes, which could allow them to execute code or perform actions outside the intended secure boundaries.

The issue was fixed in Firefox version 151.

Impact Analysis

If exploited, this vulnerability could allow an attacker to bypass the security restrictions of the browser's sandbox on Android devices. This could lead to unauthorized code execution or access to sensitive information outside the browser's protected environment.

Mitigation Strategies

To mitigate this vulnerability, update Firefox and Firefox Focus for Android to version 151 or later, where the sandbox escape issue has been fixed.

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