CVE catalog
CVE-2026-41091
Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to elevate privileges locally.
- Severity
- High · CVSS 7.8
- Published
- Source
- [NVD] · [CVE record]
- Exploitation
- CISA Known Exploited Vulnerabilities
- EPSS
- 8.20% · Oct 25, 2026
Microsoft Defender contains a link following vulnerability that allows an authorized attacker to elevate privileges locally.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | malware_protection_engine | Not reported | 1.1.26040.8 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | malware_protection_engine | cpe | Not reported | 1.1.26040.8 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-41091]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1603.json]
- [https://www.cisa.gov/known-exploited-vulnerabilities-catalog]
[CERT-Bund public advisories] · [CISA Known Exploited Vulnerabilities (OSINT)] · [FIRST EPSS] · [National Vulnerability Database (NVD)]