CVE-2026-8952 Details
Description
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
A privilege escalation vulnerability has been identified in the Application Update component of Mozilla Firefox. This issue allows an attacker to gain elevated privileges, potentially leading to unauthorized actions or access within the application. The vulnerability affects Firefox versions prior to 151.
Users can upgrade to Firefox 151 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2021727 | [email protected] | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2026-46/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-50/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-269 | Improper Privilege Management | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mozilla firefox | < 151.0.0 |
CPE
Remediation
| |
| mozilla thunderbird | < 151.0.0 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| May 20, 2026 | CVE Modified | CISA-ADP |
| May 20, 2026 | Initial Analysis | [email protected] |
| May 19, 2026 | CVE Modified | [email protected] |
| May 19, 2026 | CVE Modified | CISA-ADP |
| May 19, 2026 | New CVE Received | [email protected] |