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VULNERABILITIES

CVE-2026-8970 Details

Description

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

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=2032174 [email protected]Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-46/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-48/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-50/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-51/ [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-269Improper Privilege ManagementCISA-ADP

Affected Products

ProductVersions
mozilla firefox
< 140.11.0
< 151.0.0

CPE

  • cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

Remediation

  • No remediation found in references.
mozilla thunderbird
< 140.11
< 151.0.0

CPE

  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-8970
NVD Published Date:
May 19, 2026
NVD Last Modified:
Jul 23, 2026
Source:
[email protected]
CVE-2026-8970 Details - Not Deferred