CVE-2025-21403: Microsoft On-Prem Data Gateway

Medium severity, CVSS 6.4. EPSS: 0.6% chance of exploitation in the next 30 days.

On-Premises Data Gateway Information Disclosure Vulnerability

Affected products

• Microsoft On-Prem Data Gateway: before 3000.246 (fixed in 3000.246)

Published 2025-01-14. Last modified 2026-06-17.