CVE-2026-45584
Microsoft Defender Remote Code Execution Vulnerability
- State
- Published
- Severity
- 8.1 High
- Published
- May 20, 2026
- Updated
- Aug 10, 2026
- Reserved
- May 12, 2026
Description
Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C | microsoft |
Weaknesses
- CWE-122 Heap-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
Microsoft Malware Protection EngineMicrosoft |
|
References
- Microsoft Defender Remote Code Execution Vulnerabilityvendor-advisorypatch
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