Vulnerability Description
Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to elevate privileges locally.
CVSS Score
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Malware Protection Engine | >= 1.1.26030.3008, < 1.1.26040.8 |
Related Weaknesses (CWE)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41091Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-US Government ResourceThird Party Advisory
FAQ
What is CVE-2026-41091?
CVE-2026-41091 is a vulnerability with a CVSS score of 7.8 (HIGH). Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-41091?
CVE-2026-41091 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-41091?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Malware Protection Engine.