CVE-2026-21537
Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability
- State
- Published
- Severity
- 8.8 High
- Published
- Feb 10, 2026
- Updated
- Aug 19, 2026
- Reserved
- Dec 30, 2025
Description
Improper control of generation of code ('code injection') in Microsoft Defender for Linux allows an unauthorized attacker to execute code over an adjacent network.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C | microsoft |
Weaknesses
- CWE-94 Improper Control of Generation of Code ('Code Injection')
Affected Products
| Product | Versions |
|---|---|
Microsoft Defender for Endpoint for LinuxMicrosoft |
|
References
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