Exploited Vulnerabilities DailyCVE-2026-45498: Microsoft Defender
EPSS1.2%No. 1652 of 1739 in KEV
CVE year2026listed the same year
Same vendor in KEV389
Same product5
| Field | Value |
|---|---|
| Vendor | Microsoft |
| Product | Defender |
| Name | Microsoft Defender Denial of Service Vulnerability |
| Added to KEV | 2026-05-20 |
| US federal due date | 2026-06-03 |
| Ransomware use | Unknown |
| CWE | – |
CISA description
Microsoft Defender contains an unspecified vulnerability that allows for denial of service.
Other entries for this product
| CVE | Vendor / product | Added | EPSS | Ransomware |
|---|---|---|---|---|
| CVE-2026-41091 | Microsoft Defender | 2026-05-20 | 0.4% | Unknown |
| CVE-2026-33825 | Microsoft Defender | 2026-04-22 | 0.3% | Known |
| CVE-2022-44698 | Microsoft Defender | 2022-12-13 | 76.2% | Known |
| CVE-2021-1647 | Microsoft Defender | 2021-11-03 | 39.3% | Unknown |
Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page
A Microsoft Defender vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2026-05-20.