Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
History

Fri, 22 May 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-266
References
Metrics threat_severity

None

threat_severity

Low


Wed, 20 May 2026 17:45:00 +0000

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

Wed, 20 May 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

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

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 19 May 2026 17:45:00 +0000

Type Values Removed Values Added
Description Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11. Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
References

Tue, 19 May 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Tue, 19 May 2026 15:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Tue, 19 May 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-269
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

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


Tue, 19 May 2026 15:15:00 +0000

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

Tue, 19 May 2026 13:45:00 +0000

Type Values Removed Values Added
Description Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.
Title Privilege escalation in the Security component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-05-20T15:38:16.007Z

Reserved: 2026-05-19T12:30:16.497Z

Link: CVE-2026-8970

cve-icon Vulnrichment

Updated: 2026-05-19T14:21:47.673Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-19T14:16:53.500

Modified: 2026-05-20T17:34:49.203

Link: CVE-2026-8970

cve-icon Redhat

Severity : Low

Publid Date: 2026-05-19T12:30:17Z

Links: CVE-2026-8970 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-22T01:45:24Z