CVE-2026-69414: Malware Protection Engine Improper Access Control
CVE-2026-69414 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender, publicly referred to as "ShieldBreak." We are working to provide a high-quality security update that addresses this vulnerability. We will provide information in this CVE when the update is available. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
Description
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender, publicly referred to as "ShieldBreak." We are working to provide a high-quality security update that addresses this vulnerability. We will provide information in this CVE when the update is available.
Metrics
- CVSS: 3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS Score: 7.8/10
- EPSS Probability: 0.23% (13.7th percentile) Probability of exploitation in the next 30 days. Learn more
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Malware Protection Engine | All versions |
References
Timeline
- Published: Aug 14, 2026
- Last Modified: Aug 20, 2026
- Status: Modified
Frequently Asked Questions
What is CVE-2026-69414?
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender, publicly referred to as "ShieldBreak." We are working to provide a high-quality security update that addresses this vulnerability. We will provide information in this CVE when the update is available.
How severe is CVE-2026-69414?
CVE-2026-69414 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.
How do I fix CVE-2026-69414?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.