CVE-2026-92062: Vulnerability in Mozilla Firefox
Privilege escalation in the Session Restore component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
AI Analysis
Technical Summary
This vulnerability involves privilege escalation within the Session Restore component of Mozilla Firefox. It was resolved by Mozilla in Firefox 156 and Firefox ESR 153.3. The vendor advisory confirms the fix and categorizes the impact as high. There are no reported active exploits leveraging this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Firefox browser, potentially leading to unauthorized actions or access within the browser context. However, no active exploitation has been observed.
Mitigation Recommendations
Users and administrators should update Firefox to version 156 or later, or Firefox ESR 153.3 or later, to remediate this vulnerability. The vendor advisory confirms that the issue is fixed in these versions.
CVE-2026-92062: Vulnerability in Mozilla Firefox
Description
Privilege escalation in the Session Restore component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
CVSS v3.1
Score 8.8high
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves privilege escalation within the Session Restore component of Mozilla Firefox. It was resolved by Mozilla in Firefox 156 and Firefox ESR 153.3. The vendor advisory confirms the fix and categorizes the impact as high. There are no reported active exploits leveraging this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Firefox browser, potentially leading to unauthorized actions or access within the browser context. However, no active exploitation has been observed.
Mitigation Recommendations
Users and administrators should update Firefox to version 156 or later, or Firefox ESR 153.3 or later, to remediate this vulnerability. The vendor advisory confirms that the issue is fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-15T12:34:23.385Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-93/","vendor":"Mozilla"}]
Threat ID: 6aa93e6755bf5e2cf5d31016
Added to database: 09/15/2026, 12:47:35 UTC
Last enriched: 09/15/2026, 13:02:09 UTC
Last updated: 09/16/2026, 04:01:24 UTC
Views: 9
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