Privilege escalation in the Session Restore component. (CVE-2026-92062)
CVE-2026-92062 is a high-severity privilege escalation vulnerability in the Session Restore component of Firefox. This flaw allows an attacker to gain elevated privileges. The issue has been addressed and fixed in Firefox version 156 and Firefox ESR 153.3.
AI Analysis
Technical Summary
This vulnerability involves privilege escalation in the Session Restore component of Firefox. It was assigned CVE-2026-92062 and has a CVSS 3.1 base score of 8.8, indicating high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts confidentiality, integrity, and availability. The issue was fixed in Firefox 156 and Firefox ESR 153.3 as per the Mozilla Foundation Security Advisory 2026-90.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges, potentially leading to full compromise of the affected Firefox process. The CVSS score of 8.8 reflects a high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Users and administrators should upgrade to Firefox 156 or later, or Firefox ESR 153.3 or later, to remediate this vulnerability. The vendor has released an official fix, and applying this update fully mitigates the issue.
Privilege escalation in the Session Restore component. (CVE-2026-92062)
Description
CVE-2026-92062 is a high-severity privilege escalation vulnerability in the Session Restore component of Firefox. This flaw allows an attacker to gain elevated privileges. The issue has been addressed and fixed in Firefox version 156 and Firefox ESR 153.3.
CVSS v3.1
Score 8.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves privilege escalation in the Session Restore component of Firefox. It was assigned CVE-2026-92062 and has a CVSS 3.1 base score of 8.8, indicating high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts confidentiality, integrity, and availability. The issue was fixed in Firefox 156 and Firefox ESR 153.3 as per the Mozilla Foundation Security Advisory 2026-90.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges, potentially leading to full compromise of the affected Firefox process. The CVSS score of 8.8 reflects a high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Users and administrators should upgrade to Firefox 156 or later, or Firefox ESR 153.3 or later, to remediate this vulnerability. The vendor has released an official fix, and applying this update fully mitigates the issue.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-vrhw-9hf2-47jc
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-92062"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aaa080c55bf5e2cf5ea480f
Added to database: 09/16/2026, 03:07:56 UTC
Last enriched: 09/16/2026, 05:04:08 UTC
Last updated: 09/16/2026, 05:04:08 UTC
Views: 4
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