CVE-2021-33766 KEV
7.3
HIGH · CVSS 3.1 · EPSS 98.1% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2022-02-01.
Description
Microsoft Exchange Server Information Disclosure Vulnerability
Scoring
| CVSS | 7.3 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| EPSS | 98.14% — more likely to be exploited than 100% of all CVEs |
| On CISA KEV | yes — remediate by 2022-02-01 |
| Public exploit | none known |
| Published | 2021-07-14 |
| Last modified | 2026-08-10 |
CISA KEV
| Name | Microsoft Exchange Server Information Disclosure |
|---|---|
| Added | 2022-01-18 |
| Due | 2022-02-01 |
| Vendor / product | Microsoft / Exchange Server |
| Ransomware use | none reported |
Affected (1)
| Vendor | Product |
|---|---|
| microsoft | exchange server |
References
→ the Explorer · watch your stack · NVD