CVE-2026-16392: Vulnerability in Mozilla Firefox
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153.
AI Analysis
Technical Summary
This vulnerability concerns a JIT miscompilation flaw in the JavaScript Engine's JIT component of Mozilla Firefox. The flaw could cause incorrect code generation during JIT compilation, potentially leading to security issues. Mozilla fixed this vulnerability in Firefox 153 as part of a broader security update addressing multiple high-impact vulnerabilities. The vendor advisory categorizes the impact as moderate for this specific issue and provides no indication of active exploitation.
Potential Impact
The vulnerability could allow an attacker to exploit the JIT miscompilation to affect the execution of JavaScript code, which may lead to security risks such as privilege escalation or sandbox escape. However, the vendor advisory classifies the impact as moderate and does not report any known active exploitation. The fix in Firefox 153 mitigates this risk.
Mitigation Recommendations
Users should update to Firefox 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-2026-16392: Vulnerability in Mozilla Firefox
Description
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability concerns a JIT miscompilation flaw in the JavaScript Engine's JIT component of Mozilla Firefox. The flaw could cause incorrect code generation during JIT compilation, potentially leading to security issues. Mozilla fixed this vulnerability in Firefox 153 as part of a broader security update addressing multiple high-impact vulnerabilities. The vendor advisory categorizes the impact as moderate for this specific issue and provides no indication of active exploitation.
Potential Impact
The vulnerability could allow an attacker to exploit the JIT miscompilation to affect the execution of JavaScript code, which may lead to security risks such as privilege escalation or sandbox escape. However, the vendor advisory classifies the impact as moderate and does not report any known active exploitation. The fix in Firefox 153 mitigates this risk.
Mitigation Recommendations
Users should update to Firefox 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
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-07-20T21:57:14.800Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-68/","vendor":"Mozilla"}]
Threat ID: 6a5f6cc12a4a8d5989262917
Added to database: 07/21/2026, 12:57:37 UTC
Last enriched: 07/21/2026, 13:15:05 UTC
Last updated: 07/21/2026, 21:19:21 UTC
Views: 4
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