Microsoft UpdateALERT Medium

Unauthenticated command injection on internet-facing mail servers: tracking CVE-2026-73570

Microsoft Threat Intelligence examines CVE-2026-73570 exploitation in Zimbra, including observed attack paths, detection opportunities, and mitigation guidance. The post Unauthenticated command injection on internet-facing mail servers: tracking CVE-2026-73570...

Impact

Review the update details and guidance.

Recommended Action

Read the blog post for update guidance and deployment notes.

Published: 9/30/2026, 2:00:00 PMSource: Microsoft Security BlogTags: