CVE-2026-16401: Vulnerability in Mozilla Firefox
Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153.
AI Analysis
Technical Summary
CVE-2026-16401 is a privilege escalation vulnerability affecting the Data Loss Prevention component in Mozilla Firefox. The flaw allows an attacker to escalate privileges, potentially increasing their access or control within the browser environment. Mozilla fixed this vulnerability in Firefox 153 as part of a broader security update addressing multiple high and moderate impact issues. The official Mozilla advisory (MFSA2026-68) confirms the fix and provides no indication of active exploitation in the wild.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate their privileges within Firefox, potentially bypassing security restrictions enforced by the Data Loss Prevention component. This could lead to unauthorized actions or access within the browser context. However, there are no reports of known exploits in the wild at this time.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox version 153. Users and administrators should update to Firefox 153 or later to remediate this issue. No additional mitigation steps are required beyond applying the official update.
CVE-2026-16401: Vulnerability in Mozilla Firefox
Description
Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16401 is a privilege escalation vulnerability affecting the Data Loss Prevention component in Mozilla Firefox. The flaw allows an attacker to escalate privileges, potentially increasing their access or control within the browser environment. Mozilla fixed this vulnerability in Firefox 153 as part of a broader security update addressing multiple high and moderate impact issues. The official Mozilla advisory (MFSA2026-68) confirms the fix and provides no indication of active exploitation in the wild.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate their privileges within Firefox, potentially bypassing security restrictions enforced by the Data Loss Prevention component. This could lead to unauthorized actions or access within the browser context. However, there are no reports of known exploits in the wild at this time.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox version 153. Users and administrators should update to Firefox 153 or later to remediate this issue. No additional mitigation steps are required beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-07-20T21:57:33.473Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-68/","vendor":"Mozilla"}]
Threat ID: 6a5f6cc22a4a8d598926294e
Added to database: 07/21/2026, 12:57:38 UTC
Last enriched: 07/21/2026, 13:14:05 UTC
Last updated: 07/21/2026, 22:51:54 UTC
Views: 5
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