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New Guidance Released on Microsoft Exchange Server Security Best Practices ↗ source

October 30, 2025 CISA Alert
Co-sealed by: CISA, NSA
Source: https://www.cisa.gov/news-events/alerts/2025/10/30/new-guidance-released-microsoft-exchange-server-security-best-practices

Summary

Threat activity targeting Exchange continues to persist, and organizations with unprotected or misconfigured Exchange servers remain at high risk of compromise. This product is provided subject to this Notification and this Privacy & Use policy.

News Coverage

No coverage found in monitored research blogs or news feeds.

CVEs Referenced in This Publication

No CVEs are referenced in this publication.

Vendors Named in This Publication

Microsoft 388 KEV

Each vendor links to its Known Exploited Vulnerabilities catalog page. Only vendors that appear in the KEV catalog are listed, either because the publication cites one of their KEV entries or because it names them directly.