Exploited Vulnerabilities DailyCVE-2021-1647: Microsoft Defender
EPSS39.3%No. 944 of 1739 in KEV
CVE year2021listed the same year
Same vendor in KEV389
Same product5
| Field | Value |
|---|---|
| Vendor | Microsoft |
| Product | Defender |
| Name | Microsoft Defender Remote Code Execution Vulnerability |
| Added to KEV | 2021-11-03 |
| US federal due date | 2021-11-17 |
| Ransomware use | Unknown |
| CWE | CWE-122, CWE-1285 |
CISA description
Microsoft Defender contains an unspecified vulnerability that allows for remote code execution.
Other entries for this product
| CVE | Vendor / product | Added | EPSS | Ransomware |
|---|---|---|---|---|
| CVE-2026-45498 | Microsoft Defender | 2026-05-20 | 1.2% | Unknown |
| 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 |
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 2021-11-03.