CVE-2025-59249HighCVSS 8.8

Microsoft Exchange Server Elevation of Privilege Vulnerability

Published
October 14, 2025
Last Modified
—

🔗 CVE IDs covered (1)

📋 Description

Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges 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

KB5066369 (Security Update) — fixed build 15.01.2507.061 KB5066368 (Security Update) — fixed build 15.02.1544.036 KB5066367 (Security Update) — fixed build 15.02.1748.039 KB5066366 (Security Update) — fixed build 15.02.2562.029

🔗 References (9)