Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact total

Affected Vendors & Products

No data.

No data.

No data.

No data.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2040382 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-68/ cve-icon
History

Tue, 21 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-693
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

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 Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153.
Title Mitigation bypass in the Networking component
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-07-21T19:20:01.773Z

Reserved: 2026-07-20T21:57:43.911Z

Link: CVE-2026-16406

cve-icon Vulnrichment

Updated: 2026-07-21T19:19:17.006Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.