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 ".
EPSS: 0.107 (95.4th percentile) — read the EPSS interpretation.
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.
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)
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?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.