CVE-2025-64667HighCVSS 5.3

Microsoft Exchange Server Spoofing Vulnerability

Published
December 9, 2025
Last Modified
—

🔗 CVE IDs covered (1)

📋 Description

User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

🎯 Affected products4

  • Microsoft Exchange Server 2016 Cumulative Update 23
  • Microsoft Exchange Server 2019 Cumulative Update 14
  • Microsoft Exchange Server 2019 Cumulative Update 15
  • Microsoft Exchange Server Subscription Edition RTM

✅ Remediation

KB5071876 (Security Update) — fixed build 15.02.2562.035 KB5071873 (Security Update) — fixed build 15.01.2507.063 KB5071875 (Security Update) — fixed build 15.02.1748.042 KB5071874 (Security Update) — fixed build 15.02.1544.037

🔗 References (6)