All CVE records
CVE-2026-33825 — Microsoft Defender Insufficient Granularity of Access Control Vulnerability
Known ransomware use
CISA KEV listed
Added April 22, 2026 Remediate by May 6, 2026
Description
Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.
Required 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.
Notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825 ; https://nvd.nist.gov/vuln/detail/CVE-2026-33825
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