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CVE-2026-41091

Microsoft Defender•HIGH · CVSS 7.8• In the wild In CISA KEV

What is CVE-2026-41091?

Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to elevate privileges locally.

CVSS7.8 NVD 3.1
SeverityHIGH
Exploitation In the wild In CISA KEV
Triage statusActive Exploit
ActionPatch immediately
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWECWE-59
NVD published2026-05-20
NVD last modified2026-05-20

CISA Known Exploited Vulnerability

Microsoft Defender Link Following Vulnerability

Added to KEV2026-05-20
Federal patch deadline2026-06-03
Known ransomware useUnknown

Affected product

Microsoft Defender

References

Coverage on defend.network

🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.

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