September 30, 2022 · Applied Cybernetics Group
CVE-2022-41040 — Microsoft Exchange Server
known ransomware use
Microsoft Exchange Server Server-Side Request Forgery Vulnerability
- Added to KEV
2022-09-30- Federal due date
2022-10-21- Vendor
- Microsoft
- Product
- Exchange Server
- EPSS
- 100.0th percentile (score 0.999, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2022-41040
CISA short description
Microsoft Exchange Server allows for server-side request forgery. Dubbed "ProxyNotShell," this vulnerability is chainable with CVE-2022-41082 which allows for remote code execution.
Required action
Apply updates per vendor instructions.