CVE-2026-84135

Modified Modified - Updated After Analysis

Firefox Focus for Android Information Disclosure

Publication date: 2026-09-01

Last updated on: 2026-09-03

Assigner: Mozilla Corporation

Description

Other issue in Firefox Focus for Android. This vulnerability was fixed in Firefox 155.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-01

Last Modified

2026-09-03

Generated

2026-09-21

AI Q&A

2026-09-01

EPSS Evaluated

2026-09-20

NVD

CVE-2026-84135

EUVD

EUVD-2026-69083

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox_mobile	to 155.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This vulnerability is an issue in Firefox Focus for Android that was fixed in Firefox version 155. The exact nature of the vulnerability is not specified in the provided context.

Detection Guidance

Detection methods or specific commands for this vulnerability are not provided in the available context. General detection would involve checking Firefox Focus or Firefox browser versions against the fixed version (155).

Impact Analysis

Without specific details on the vulnerability, potential impacts could include unauthorized access to data, application crashes, or exposure of sensitive information. Users should update to Firefox 155 or later to mitigate risks.

Compliance Impact

The provided CVE data does not specify how this vulnerability affects compliance with standards like GDPR or HIPAA. The description only mentions a general issue in Firefox Focus for Android without details on data exposure or regulatory impact.

Mitigation Strategies

Update Firefox Focus for Android to version 155 or later to address the vulnerability.

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