Vulnerability in Microsoft Malware Protection Engine
CVE-2026-50656
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "RoguePlanet ".
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: 0.114 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.114 · newest: 0.114 · change: 0.000
Affected products
- Microsoft Malware Protection Engine
- Microsoft Malware Protection Engine — versions 1.1.0.0
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 (Product)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
Frequently asked questions
- What is CVE-2026-50656?
- CVE-2026-50656 is a high-severity vulnerability in Microsoft Malware Protection Engine, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2026-06-16.
- How severe is CVE-2026-50656?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2026-50656 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.