CVE Watch—

CVE-2026-41091

Microsoft Defender Link Following Vulnerability

CVSS

—

No CVSS

EPSS

8.4%

p94

KEV

YES

May 20, 2026

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

8.4%EPSS · 30 days8.4%

2026-06-302026-07-16

KEV catalog record

Product

Microsoft / Defender

Vulnerability

Microsoft Defender Link Following Vulnerability

Added to KEV

May 20, 2026

Remediate by

Jun 3, 2026

Known ransomware use

Summary description

Microsoft Defender contains a link following vulnerability that allows an authorized attacker to elevate privileges locally.

Required action

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

Notes

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-41091 ; https://nvd.nist.gov/vuln/detail/CVE-2026-41091

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2022-44698—

99.5%

KEV—80Microsoft Defender SmartScreen Security Feature Bypass Vulnerability—CVE-2026-45498—

99.1%

KEV—80Microsoft Defender Denial of Service Vulnerability—CVE-2021-1647—

98.5%

KEV—80Microsoft Defender Remote Code Execution Vulnerability—CVE-2026-33825—

93.2%

KEV—78Microsoft Defender Insufficient Granularity of Access Control Vulnerability—