Privilege escalation in Microsoft Malware Protection Engine
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 ".
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.003 · change: -0.002
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- Microsoft Defender Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
Frequently asked questions
- What is CVE-2026-69414?
- CVE-2026-69414 is a high-severity vulnerability in Microsoft Malware Protection Engine, classified under Improper Access Control. CVSS score: 7.8/10. Published 2026-08-14.
- How severe is CVE-2026-69414?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2026-69414 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.