CVE-2026-16401: Vulnerability in Mozilla Firefox
Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
AI Analysis
Technical Summary
CVE-2026-16401 is a privilege escalation vulnerability affecting the Data Loss Prevention component in Firefox versions prior to 153. The flaw could allow an attacker to escalate privileges within the affected component, potentially impacting security controls related to data loss prevention. Mozilla fixed this vulnerability in Firefox 153 as part of a broader security update addressing multiple issues. There is no CVSS score provided, and no known active exploitation has been reported.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Data Loss Prevention component, potentially undermining security mechanisms designed to prevent data leakage. However, no known exploits in the wild have been reported, and the vulnerability is mitigated by updating to Firefox 153 or later.
Mitigation Recommendations
Users and administrators should update Firefox to version 153 or later to remediate this vulnerability. Mozilla has officially fixed this issue in Firefox 153. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-16401: Vulnerability in Mozilla Firefox
Description
Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVSS v3.1
Score 8.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16401 is a privilege escalation vulnerability affecting the Data Loss Prevention component in Firefox versions prior to 153. The flaw could allow an attacker to escalate privileges within the affected component, potentially impacting security controls related to data loss prevention. Mozilla fixed this vulnerability in Firefox 153 as part of a broader security update addressing multiple issues. There is no CVSS score provided, and no known active exploitation has been reported.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Data Loss Prevention component, potentially undermining security mechanisms designed to prevent data leakage. However, no known exploits in the wild have been reported, and the vulnerability is mitigated by updating to Firefox 153 or later.
Mitigation Recommendations
Users and administrators should update Firefox to version 153 or later to remediate this vulnerability. Mozilla has officially fixed this issue in Firefox 153. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-96fg-w4m5-jgwc
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-16401"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5fd1561010f89cc21c9831
Added to database: 07/21/2026, 20:06:46 UTC
Last enriched: 07/22/2026, 17:40:58 UTC
Last updated: 09/03/2026, 05:38:42 UTC
Views: 69
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