CVE-2026-21537

8.8 highEPSS 0.5%

High (8.8) in microsoft defender for endpoint. EPSS 0.5% chance of exploitation in the next 30 days.

Improper control of generation of code ('code injection') in Microsoft Defender for Linux allows an unauthorized attacker to execute code over an adjacent network.

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
CWE: CWE-94
Published: 2026-02-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

microsoft:defender_for_endpoint

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21537

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