CVE-2026-21537

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-21537
Improper control of generation of code ('code injection') in Microsoft Defender for Linux allows an unauthorized attacker to execute code over an adjacent network.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21537 Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:defender_for_endpoint:-:*:*:*:*:linux:*:*
History

11 Feb 2026, 21:50

Type Values Removed Values Added
First Time Microsoft
Microsoft defender For Endpoint
References () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21537 - () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21537 - Vendor Advisory
CPE cpe:2.3:a:microsoft:defender_for_endpoint:-:*:*:*:*:linux:*:*

10 Feb 2026, 18:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-10 18:16

Updated : 2026-02-11 21:50

NVD link : CVE-2026-21537

Mitre link : CVE-2026-21537

CVE.ORG link : CVE-2026-21537

JSON object : View

Products Affected

microsoft

  • defender_for_endpoint
CWE
CWE-94

Improper Control of Generation of Code ('Code Injection')