CVE-2026-16379: Vulnerability in Mozilla Firefox
Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.
AI Analysis
Technical Summary
CVE-2026-16379 is a privilege escalation vulnerability affecting the DOM: Content Processes component in Mozilla Firefox. It was addressed and fixed in Firefox 153 and Firefox ESR 140.13. The vulnerability allows an attacker to escalate privileges within the browser's content processes, potentially enabling actions beyond the intended security boundaries. The Mozilla advisory classifies the impact as moderate and provides a bug reference (Bug 2039452). This fix is part of a comprehensive security update that addresses numerous vulnerabilities across Firefox components.
Potential Impact
The vulnerability enables privilege escalation within Firefox's content processes, which could allow an attacker to gain elevated privileges in the browser environment. This may lead to unauthorized actions or access within the browser context. However, no active exploitation in the wild has been reported. The impact is rated moderate by Mozilla.
Mitigation Recommendations
This vulnerability is fixed in Mozilla Firefox version 153 and Firefox ESR 140.13. Users and administrators should update to these versions or later to remediate the issue. Since this is not a cloud service, remediation depends on applying the official vendor patches. Patch status is confirmed by the Mozilla advisory.
CVE-2026-16379: Vulnerability in Mozilla Firefox
Description
Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.
Affected software
pkg:github/mozilla/firefox-esrRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16379 is a privilege escalation vulnerability affecting the DOM: Content Processes component in Mozilla Firefox. It was addressed and fixed in Firefox 153 and Firefox ESR 140.13. The vulnerability allows an attacker to escalate privileges within the browser's content processes, potentially enabling actions beyond the intended security boundaries. The Mozilla advisory classifies the impact as moderate and provides a bug reference (Bug 2039452). This fix is part of a comprehensive security update that addresses numerous vulnerabilities across Firefox components.
Potential Impact
The vulnerability enables privilege escalation within Firefox's content processes, which could allow an attacker to gain elevated privileges in the browser environment. This may lead to unauthorized actions or access within the browser context. However, no active exploitation in the wild has been reported. The impact is rated moderate by Mozilla.
Mitigation Recommendations
This vulnerability is fixed in Mozilla Firefox version 153 and Firefox ESR 140.13. Users and administrators should update to these versions or later to remediate the issue. Since this is not a cloud service, remediation depends on applying the official vendor patches. Patch status is confirmed by the Mozilla advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-07-20T21:56:46.680Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-68/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-70/","vendor":"Mozilla"}]
Threat ID: 6a5f6cbe2a4a8d59892625e2
Added to database: 07/21/2026, 12:57:34 UTC
Last enriched: 07/21/2026, 13:29:14 UTC
Last updated: 07/21/2026, 22:51:54 UTC
Views: 5
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