CVE-2026-33825Microsoft Defender Insufficient Granularity of Access Control Vulnerability
CISA Known Exploited Vulnerabilities Data
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.
CISA Due Date
May 6, 2026 (federal agency requirement)
Known Ransomware Campaign Use
Unknown
Notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825 ; https://nvd.nist.gov/vuln/detail/CVE-2026-33825
External References
Concerned about this vulnerability in your environment?
Our team can assess your exposure and help you remediate.
Data sourced from the CISA Known Exploited Vulnerabilities catalog. CISA does not endorse any commercial product or service.