CVE-2026-41091

high · 7.8Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

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

Added 2026-05-20Remediation due 2026-06-03

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

7.8

CVSS

8.2%

EPSS (exploit prob.)

95th

EPSS percentile

2026-05-20

Published

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

Weaknesses

CWE-59

Affected products

Vendor	Product	Affected versions
microsoft	malware_protection_engine	>= 1.1.26030.3008, < 1.1.26040.8

Check a specific version with /api/v1/cve/match.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41091
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-41091

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-41091