CVE-2026-16401 - Vulnerability Details - OpenCVE

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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00133.

Exploitation none

Automatable yes

Technical Impact total

No data.

No data.

No data.

No data.

References

Link	Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2052565
https://www.mozilla.org/security/advisories/mfsa2026-68/
https://www.mozilla.org/security/advisories/mfsa2026-71/

History

Wed, 22 Jul 2026 20:00:00 +0000

Type	Values Removed	Values Added
Description	Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153.	Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
References		https://www.mozilla.org/security/advisories/mfsa2026-71/

Wed, 22 Jul 2026 18:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-269
Metrics		cvssV3_1 `{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 21 Jul 2026 12:45:00 +0000

Type	Values Removed	Values Added
Description		Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153.
Title		Privilege escalation in the Data Loss Prevention component
References		https://bugzilla.mozilla.org/show_bug.cgi?id=2052565 https://www.mozilla.org/security/advisories/mfsa2026-68/

MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-07-21T12:38:14.044Z

Updated: 2026-07-22T19:19:06.591Z

Reserved: 2026-07-20T21:57:33.473Z

Link: CVE-2026-16401

Vulnrichment

Updated: 2026-07-22T17:24:03.917Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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