CVE-2026-33825—Microsoft Defender Insufficient Granularity of Access Control Vulnerability

Vulnerability Name

Microsoft Defender Insufficient Granularity of Access Control Vulnerability

Description

Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

KNOWN

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Additional Notes

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825
• https://nvd.nist.gov/vuln/detail/CVE-2026-33825

Related News Articles

• Microsoft Patches RoguePlanet Defender Flaw That Can Grant SYSTEM PrivilegesJuly 9, 2026
• Microsoft Confirms RoguePlanet Defender Zero-Day, Says Patch is in DevelopmentJune 17, 2026
• Microsoft Defender RoguePlanet Zero-Day Grants SYSTEM Access on Updated WindowsJune 10, 2026
• Microsoft patches YellowKey, GreenPlasma, MiniPlasma zero-daysJune 10, 2026
• Critical Windows Netlogon RCE flaw now exploited in attacksJune 1, 2026

Related Weaknesses

• CWE-1220