CVE-2026-8957: Vulnerability in Mozilla Firefox
Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
AI Analysis
Technical Summary
CVE-2026-8957 is a privilege escalation vulnerability affecting the Enterprise Policies component in Mozilla Firefox. It was fixed in Firefox 151 and Firefox ESR 140.11 as part of a broader security update that addressed multiple vulnerabilities with varying impacts. The Mozilla advisories classify the impact of this specific vulnerability as moderate. No CVSS score is provided, but the vendor confirms the vulnerability is resolved in the specified versions.
Potential Impact
The vulnerability allows privilege escalation within the Firefox browser, which could enable an attacker to perform actions with higher privileges than intended by the security model. The impact is rated moderate by Mozilla. There are no known exploits in the wild at the time of the advisory. The fix eliminates the risk by patching the affected component.
Mitigation Recommendations
Users and administrators should update to Firefox 151 or Firefox ESR 140.11 or later to remediate this vulnerability. Mozilla has provided official fixes in these versions, and no further action is required beyond applying these updates. Patch status is confirmed by the vendor advisories.
CVE-2026-8957: Vulnerability in Mozilla Firefox
Description
Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8957 is a privilege escalation vulnerability affecting the Enterprise Policies component in Mozilla Firefox. It was fixed in Firefox 151 and Firefox ESR 140.11 as part of a broader security update that addressed multiple vulnerabilities with varying impacts. The Mozilla advisories classify the impact of this specific vulnerability as moderate. No CVSS score is provided, but the vendor confirms the vulnerability is resolved in the specified versions.
Potential Impact
The vulnerability allows privilege escalation within the Firefox browser, which could enable an attacker to perform actions with higher privileges than intended by the security model. The impact is rated moderate by Mozilla. There are no known exploits in the wild at the time of the advisory. The fix eliminates the risk by patching the affected component.
Mitigation Recommendations
Users and administrators should update to Firefox 151 or Firefox ESR 140.11 or later to remediate this vulnerability. Mozilla has provided official fixes in these versions, and no further action is required beyond applying these updates. Patch status is confirmed by the vendor advisories.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-05-19T12:29:51.909Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-46/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-48/","vendor":"Mozilla"}]
Threat ID: 6a0c677bec166c07b0a993e5
Added to database: 5/19/2026, 1:36:59 PM
Last enriched: 5/19/2026, 1:54:52 PM
Last updated: 5/20/2026, 1:33:49 PM
Views: 11
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