November 3, 2021 · Applied Cybernetics Group
CVE-2020-17144 — Microsoft Exchange Server
Microsoft Exchange Server Remote Code Execution Vulnerability
- Added to KEV
2021-11-03- Federal due date
2022-05-03- Vendor
- Microsoft
- Product
- Exchange Server
- EPSS
- 99.7th percentile (score 0.920, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2020-17144
CISA short description
Microsoft Exchange Server improperly validates cmdlet arguments which allow an attacker to perform remote code execution.
Required action
Apply updates per vendor instructions.