Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

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.

Exploitation none

Automatable yes

Technical Impact total

Affected Vendors & Products

Vendors Products
Mozilla
  • Firefox
  • Thunderbird

Configuration 1 [-]

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2067531 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-92079 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-92079 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-90/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-90/#CVE-2026-92079 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-93/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-94/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-94/#CVE-2026-92079 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-96/ cve-icon cve-icon
History

Mon, 05 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Vendors & Products Mozilla thunderbird

Tue, 22 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-693
Metrics cvssV3_1

{'score': 3.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N'}

 ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

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'}

Thu, 17 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-807
References
Metrics threat_severity

None

 cvssV3_1

{'score': 3.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N'}

threat_severity

Low

Wed, 16 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
Description Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156. Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
References

Wed, 16 Sep 2026 04:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-94

Tue, 15 Sep 2026 20:15:00 +0000

Type Values Removed Values Added
Description Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3. Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
References

Tue, 15 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Tue, 15 Sep 2026 13:00:00 +0000

Type Values Removed Values Added
Description Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.
Title Mitigation bypass in the Widget: Win32 component
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-09-15T12:34:41.289Z

Updated: 2026-09-22T16:08:19.578Z

Reserved: 2026-09-15T12:34:40.765Z

Link: CVE-2026-92079

cve-icon Vulnrichment

Updated: 2026-09-22T16:02:43.802Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-15T13:17:03.560

Modified: 2026-10-05T19:01:22.410

Link: CVE-2026-92079

cve-icon Redhat

Severity : Low

Publid Date: 2026-09-15T12:34:41Z

Links: CVE-2026-92079 - Bugzilla