Microsoft Defender
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Recent Microsoft Defender Security Advisories
| Advisory | Title | Published |
|---|---|---|
| CVE-2026-41091 | CVE-2026-41091 Microsoft Defender Elevation of Privilege Vulnerability | May 26, 2026 |
| CVE-2026-45584 | CVE-2026-45584 Microsoft Defender Remote Code Execution Vulnerability | May 26, 2026 |
| CVE-2026-45498 | CVE-2026-45498 Microsoft Defender Denial of Service Vulnerability | May 26, 2026 |
| CVE-2026-33825 | CVE-2026-33825 Microsoft Defender Elevation of Privilege Vulnerability | April 14, 2026 |
| CVE-2026-21537 | CVE-2026-21537 Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability | February 10, 2026 |
| CVE-2025-62459 | CVE-2025-62459 Microsoft Defender Portal Spoofing Vulnerability | November 21, 2025 |
| CVE-2025-59497 | CVE-2025-59497 Microsoft Defender for Linux Denial of Service Vulnerability | October 14, 2025 |
| CVE-2025-47161 | CVE-2025-47161 Microsoft Defender for Endpoint Elevation of Privilege Vulnerability | May 15, 2025 |
| CVE-2025-26685 | CVE-2025-26685 Microsoft Defender for Identity Spoofing Vulnerability | May 13, 2025 |
| CVE-2025-26684 | CVE-2025-26684 Microsoft Defender Elevation of Privilege Vulnerability | May 13, 2025 |
By the Year
In 2026 there have been 2 vulnerabilities in Microsoft Defender with an average score of 5.9 out of ten.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 2 | 5.90 |
It may take a day or so for new Microsoft Defender vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Microsoft Defender Security Vulnerabilities
May 2026: Microsoft Defender Denial of Service Vulnerability
CVE-2026-45498
4 - Medium
- May 20, 2026
Microsoft Defender Denial of Service Vulnerability
Resource Exhaustion
Apr 2026: Microsoft Defender Elevation of Privilege Vulnerability
CVE-2026-33825
7.8 - High
- April 14, 2026
Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
Insufficient Granularity of Access Control
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