CVE catalog
CVE-2026-45498
Microsoft Defender Denial of Service Vulnerability
- Severity
- Medium · CVSS 4
- Published
- Source
- [NVD] · [CVE record]
- Exploitation
- CISA Known Exploited Vulnerabilities
- EPSS
- 63.08% · Oct 25, 2026
Microsoft Defender contains an unspecified vulnerability that allows for denial of service.
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 | defender_antimalware_platform | Not reported | 4.18.26040.7 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | defender_antimalware_platform | cpe | Not reported | 4.18.26040.7 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-45498]
- [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)]