CVE-2026-8952: Vulnerability in Mozilla Firefox
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
AI Analysis
Technical Summary
CVE-2026-8952 is a vulnerability in Mozilla Firefox's Application Update component that allows privilege escalation. The issue was reported by Tomoya Nakanishi and is rated as having moderate impact. Mozilla fixed this vulnerability in Firefox 151 as part of a broader security update that addressed multiple vulnerabilities. No CVSS score is provided, but the vendor advisory classifies the impact as moderate. There are no known active exploits targeting this vulnerability. The vendor advisory is the authoritative source confirming the fix in Firefox 151.
Potential Impact
The vulnerability allows an attacker to escalate privileges within the Firefox Application Update component, potentially enabling unauthorized actions at a higher privilege level. The impact is considered moderate by Mozilla. There are no reports of exploitation in the wild, reducing immediate risk to users who have not yet updated.
Mitigation Recommendations
Mozilla has fixed this vulnerability in Firefox version 151. Users and administrators should update to Firefox 151 or later to remediate this issue. Since the fix is officially released, no additional mitigation steps are required beyond applying the update.
CVE-2026-8952: Vulnerability in Mozilla Firefox
Description
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8952 is a vulnerability in Mozilla Firefox's Application Update component that allows privilege escalation. The issue was reported by Tomoya Nakanishi and is rated as having moderate impact. Mozilla fixed this vulnerability in Firefox 151 as part of a broader security update that addressed multiple vulnerabilities. No CVSS score is provided, but the vendor advisory classifies the impact as moderate. There are no known active exploits targeting this vulnerability. The vendor advisory is the authoritative source confirming the fix in Firefox 151.
Potential Impact
The vulnerability allows an attacker to escalate privileges within the Firefox Application Update component, potentially enabling unauthorized actions at a higher privilege level. The impact is considered moderate by Mozilla. There are no reports of exploitation in the wild, reducing immediate risk to users who have not yet updated.
Mitigation Recommendations
Mozilla has fixed this vulnerability in Firefox version 151. Users and administrators should update to Firefox 151 or later to remediate this issue. Since the fix is officially released, no additional mitigation steps are required beyond applying the update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-05-19T12:29:44.424Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-46/","vendor":"Mozilla"}]
Threat ID: 6a0c677bec166c07b0a993cc
Added to database: 5/19/2026, 1:36:59 PM
Last enriched: 5/19/2026, 2:06:55 PM
Last updated: 5/20/2026, 6:15:51 PM
Views: 8
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