Exploited vulnerabilities
The CISA Known Exploited Vulnerabilities catalogue, with severity and affected-product data from the National Vulnerability Database. Everything on this list has been observed in real attacks — it is not a forecast.
- 1695
- On the catalogue
- 8
- Added in 7 days
- 7
- Due within 7 days
- 354
- Used in ransomware
| CVE | Affected | CVSS | Added | Due | |
|---|---|---|---|---|---|
| CVE-2023-24880 | Microsoft Windows | 2023-03-14 | 2023-04-04 | ransomware | |
| CVE-2023-23376 | Microsoft Windows | 2023-02-14 | 2023-03-07 | ransomware | |
| CVE-2023-21529 | Microsoft Exchange Server | 2026-04-13 | 2026-04-27 | ransomware | |
| CVE-2022-44698 | Microsoft Defender | 2022-12-13 | 2023-01-03 | ransomware | |
| CVE-2022-41091 | Microsoft Windows | 2022-11-08 | 2022-12-09 | ransomware | |
| CVE-2022-41082 | Microsoft Exchange Server | 2022-09-30 | 2022-10-21 | ransomware | |
| CVE-2022-41080 | Microsoft Exchange Server | 2023-01-10 | 2023-01-31 | ransomware | |
| CVE-2022-41073 | Microsoft Windows | 2022-11-08 | 2022-12-09 | ransomware | |
| CVE-2022-41040 | Microsoft Exchange Server | 2022-09-30 | 2022-10-21 | ransomware | |
| CVE-2022-37969 | Microsoft Windows | 2022-09-14 | 2022-10-05 | ransomware | |
| CVE-2022-30190 | Microsoft Windows | 2022-06-14 | 2022-07-05 | ransomware | |
| CVE-2022-24521 | Microsoft Windows | 2022-04-13 | 2022-05-04 | ransomware | |
| CVE-2022-21999 | Microsoft Windows | 2022-03-25 | 2022-04-15 | ransomware | |
| CVE-2021-43890 | Microsoft Windows | 2021-12-15 | 2021-12-29 | ransomware | |
| CVE-2021-43226 | Microsoft Windows | 2025-10-06 | 2025-10-27 | ransomware | |
| CVE-2021-42321 | Microsoft Exchange | 2021-11-17 | 2021-12-01 | ransomware | |
| CVE-2021-42287 | Microsoft Active Directory | 2022-04-11 | 2022-05-02 | ransomware | |
| CVE-2021-42278 | Microsoft Active Directory | 2022-04-11 | 2022-05-02 | ransomware | |
| CVE-2021-41379 | Microsoft Windows | 2022-03-03 | 2022-03-17 | ransomware | |
| CVE-2021-40449 | Microsoft Windows | 2021-11-17 | 2021-12-01 | ransomware | |
| CVE-2021-31207 | Microsoft Exchange Server | 2021-11-03 | 2021-11-17 | ransomware | |
| CVE-2021-27065 | Microsoft Exchange Server | 2021-11-03 | 2022-05-03 | ransomware | |
| CVE-2021-26858 | Microsoft Exchange Server | 2021-11-03 | 2022-05-03 | ransomware | |
| CVE-2021-26857 | Microsoft Exchange Server | 2021-11-03 | 2022-05-03 | ransomware | |
| CVE-2021-26855 | Microsoft Exchange Server | 2021-11-03 | 2022-05-03 | ransomware |