CVE-2026-16412: Vulnerability in Mozilla Firefox
Multiple memory safety vulnerabilities were identified in Mozilla Firefox ESR 140.12 and Firefox 152, some showing evidence of memory corruption with potential for arbitrary code execution. These issues were addressed and fixed in Firefox 153 and Firefox ESR 140.13. The vulnerabilities include use-after-free, invalid pointer dereferences, boundary condition errors, privilege escalations, sandbox escapes, and information disclosures across various components such as DOM, JavaScript engine, WebAssembly, Audio/Video, Graphics, and Networking. Exploit code is publicly known for some critical issues, but no active attacks in the wild have been reported. The fixes are available in the specified updated versions.
AI Analysis
Technical Summary
CVE-2026-16412 and related memory safety bugs affect Firefox ESR 140.12 and Firefox 152, involving memory corruption vulnerabilities that could potentially allow arbitrary code execution. These vulnerabilities span multiple components including DOM navigation, JavaScript engine JIT, WebAssembly, Audio/Video processing, Graphics, and Networking. Mozilla released official fixes in Firefox 153 and Firefox ESR 140.13. The vendor advisory details numerous related CVEs with high to critical impact, some with public exploit code but no known active exploitation. The vulnerabilities were discovered and reported by multiple security researchers and the Mozilla Fuzzing Team.
Potential Impact
The vulnerabilities could lead to arbitrary code execution, sandbox escapes, privilege escalation, information disclosure, and mitigation bypasses in affected Firefox versions. Successful exploitation could compromise browser security and user data. However, there are no confirmed reports of exploitation in the wild despite public availability of some exploit code. The impact is considered high to critical for the memory safety bugs fixed in the stated versions.
Mitigation Recommendations
Users should update to Firefox 153 or Firefox ESR 140.13 or later to remediate these vulnerabilities. Mozilla has released official fixes for all identified issues in these versions. No additional mitigation actions are required beyond applying these updates.
CVE-2026-16412: Vulnerability in Mozilla Firefox
Description
Multiple memory safety vulnerabilities were identified in Mozilla Firefox ESR 140.12 and Firefox 152, some showing evidence of memory corruption with potential for arbitrary code execution. These issues were addressed and fixed in Firefox 153 and Firefox ESR 140.13. The vulnerabilities include use-after-free, invalid pointer dereferences, boundary condition errors, privilege escalations, sandbox escapes, and information disclosures across various components such as DOM, JavaScript engine, WebAssembly, Audio/Video, Graphics, and Networking. Exploit code is publicly known for some critical issues, but no active attacks in the wild have been reported. The fixes are available in the specified updated versions.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16412 and related memory safety bugs affect Firefox ESR 140.12 and Firefox 152, involving memory corruption vulnerabilities that could potentially allow arbitrary code execution. These vulnerabilities span multiple components including DOM navigation, JavaScript engine JIT, WebAssembly, Audio/Video processing, Graphics, and Networking. Mozilla released official fixes in Firefox 153 and Firefox ESR 140.13. The vendor advisory details numerous related CVEs with high to critical impact, some with public exploit code but no known active exploitation. The vulnerabilities were discovered and reported by multiple security researchers and the Mozilla Fuzzing Team.
Potential Impact
The vulnerabilities could lead to arbitrary code execution, sandbox escapes, privilege escalation, information disclosure, and mitigation bypasses in affected Firefox versions. Successful exploitation could compromise browser security and user data. However, there are no confirmed reports of exploitation in the wild despite public availability of some exploit code. The impact is considered high to critical for the memory safety bugs fixed in the stated versions.
Mitigation Recommendations
Users should update to Firefox 153 or Firefox ESR 140.13 or later to remediate these vulnerabilities. Mozilla has released official fixes for all identified issues in these versions. No additional mitigation actions are required beyond applying these updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-07-20T21:57:54.488Z
- 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: 6a5f6cc42a4a8d5989262a16
Added to database: 07/21/2026, 12:57:40 UTC
Last enriched: 07/21/2026, 13:12:55 UTC
Last updated: 07/21/2026, 15:39:06 UTC
Views: 20
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