Privilege escalation in the DevTools component. (CVE-2026-92055)
CVE-2026-92055 is a high-severity privilege escalation vulnerability in the DevTools component of Firefox. This vulnerability allows an attacker to gain elevated privileges. It was fixed in Firefox version 156 and Firefox ESR 153.3.
AI Analysis
Technical Summary
This vulnerability involves privilege escalation in the DevTools component of Firefox. The issue was addressed and fixed in Firefox 156 and Firefox ESR 153.3. The CVSS score is 8.8, indicating a high impact with network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality, integrity, and availability impacts.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Firefox browser environment, potentially leading to full compromise of the affected user's browser session and data confidentiality, integrity, and availability.
Mitigation Recommendations
Users and administrators should update Firefox to version 156 or later, or Firefox ESR 153.3 or later, where this vulnerability has been fixed. Applying the official update from Mozilla is the recommended remediation.
Privilege escalation in the DevTools component. (CVE-2026-92055)
Description
CVE-2026-92055 is a high-severity privilege escalation vulnerability in the DevTools component of Firefox. This vulnerability allows an attacker to gain elevated privileges. It was fixed in Firefox version 156 and Firefox ESR 153.3.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves privilege escalation in the DevTools component of Firefox. The issue was addressed and fixed in Firefox 156 and Firefox ESR 153.3. The CVSS score is 8.8, indicating a high impact with network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality, integrity, and availability impacts.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Firefox browser environment, potentially leading to full compromise of the affected user's browser session and data confidentiality, integrity, and availability.
Mitigation Recommendations
Users and administrators should update Firefox to version 156 or later, or Firefox ESR 153.3 or later, where this vulnerability has been fixed. Applying the official update from Mozilla is the recommended remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5285-vvw6-5q59
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-92055"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aaa080e55bf5e2cf5ea4826
Added to database: 09/16/2026, 03:07:58 UTC
Last enriched: 09/16/2026, 03:17:18 UTC
Last updated: 09/16/2026, 04:01:24 UTC
Views: 2
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