CVE-2026-33825
Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since Apr 22, 2026
- US federal agencies must remediate it by May 6, 2026 (BOD 22-01)
- First attack observed 1 day after disclosure
- Used in ransomware campaigns
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Source: CISA KEV · Aug 10, 2026 Jul 10, 2026 Jul 9, 2026 Apr 22, 2026 Apr 20, 2026 Apr 16, 2026
CVSS score7.8 / 10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness type (CWE)CWE-1220
Vendorsmicrosoft
Affected products
| Vendors | Product | Versions |
|---|---|---|
| microsoft | defender antimalware platform | < 4.18.26030.3011 |
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