Microsoft Exchange: known exploited vulnerabilities
Generated from CISA's catalogue of known exploited vulnerabilities as of 3 November 2026.
From CISA's catalogue, 3 entries in Microsoft Exchange that Vardion has a check for. The newest first.
| CVE | Product | Since | |
|---|---|---|---|
| CVE-2021-33766 | Microsoft Exchange Server | ||
| CVE-2021-34473 | Microsoft Exchange Server | Ransomware | |
| CVE-2021-26855 | Microsoft Exchange Server | Ransomware |
Know before an attacker does
Vardion scans the servers and websites you approve on the schedule you set. A known exploited vulnerability it finds goes to the top of the fix list.