CVE-2026-16401
Received Received - Intake

Privilege Escalation in Firefox Data Loss Prevention

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Mozilla Corporation

Description
Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153.

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-16401
EUVD
EUVD-2026-46239

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 153

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a privilege escalation vulnerability in the Data Loss Prevention component of Firefox. It allows an attacker to gain higher privileges than intended, potentially leading to unauthorized access or control.

Impact Analysis

If exploited, this vulnerability could allow an attacker to escalate their privileges on your system, potentially accessing sensitive data or performing actions with elevated permissions. Users of Firefox versions before 153 are at risk.

Mitigation Strategies

Update Firefox to version 153 or later to address the privilege escalation vulnerability in the Data Loss Prevention component.

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