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CVE-2026-41091

Microsoft · Defender · Microsoft Defender Link Following Vulnerability

Published · Added to CISA KEV
CVSS7.8
Severityhigh
WeaknessCWE-59
ExploitedYes, in CISA KEV
Ransomware useUnknown
Federal fix dueJun 3, 2026

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

Description

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

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

References

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