March 3, 2022 · Applied Cybernetics Group
CVE-2018-8581 — Microsoft Exchange Server
known ransomware use
Microsoft Exchange Server Privilege Escalation Vulnerability
- Added to KEV
2022-03-03- Federal due date
2022-03-17- Vendor
- Microsoft
- Product
- Exchange Server
- EPSS
- 99.7th percentile (score 0.918, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2018-8581
CISA short description
A privilege escalation vulnerability exists in Microsoft Exchange Server. An attacker who successfully exploited this vulnerability could attempt to impersonate any other user of the Exchange server.
Required action
Apply updates per vendor instructions.