CVE-2026-33825 Microsoft Defender Insufficient Granularity of Access Control
An authorized local attacker can elevate privileges due to insufficient access control granularity in Microsoft Defender.
- Exploited in the wild
- Since 22 Apr 2026
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-33825?
CVE-2026-33825 is a high-severity vulnerability in Microsoft Defender Antimalware Platform, published on 14 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
Weakness: CWE-1220
Which versions are affected by CVE-2026-33825?
It affects 1 product.
Products include Microsoft Defender Antimalware Platform.
How do I fix CVE-2026-33825?
No fix has been published for CVE-2026-33825 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 6 May 2026.
Is CVE-2026-33825 being exploited?
Yes. Attackers have exploited CVE-2026-33825 in the wild since at least 22 Apr 2026, including in ransomware campaigns.
Public exploit code: 7 proofs of concept on GitHub.
Other vulnerabilities in Microsoft Defender Antimalware Platform
Sources
Also known as GHSA-8vp7-4rmv-4868.