SB20260415129 - Privilege escalation in Microsoft Defender
Published: April 15, 2026 Updated: April 23, 2026
Security Bulletin ID
SB20260415129
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Insufficient Granularity of Access Control (CVE-ID: CVE-2026-33825)
CWE-ID: CWE-1220 - Insufficient Granularity of Access Control
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber
The vulnerability allows a local user to escalate privileges on the target system.
The vulnerability exists due to insufficient granularity of access control in Microsoft Defender. A local user can gain elevated privileges on the system.
Remediation
Install update from vendor's website.