CVE-2025-64666HighCVSS 7.5
Microsoft Exchange Server Elevation of Privilege Vulnerability
🔗 CVE IDs covered (1)
📋 Description
Improper input validation 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
KB5071875 (Security Update) — fixed build 15.02.1748.042 KB5071873 (Security Update) — fixed build 15.01.2507.063 KB5071876 (Security Update) — fixed build 15.02.2562.035 KB5071874 (Security Update) — fixed build 15.02.1544.037
🔗 References (6)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64666
- referencehttps://support.microsoft.com/help/5071875
- referencehttps://support.microsoft.com/help/5071873
- patchhttp://www.microsoft.com/en-us/download/details.aspx?id=108493
- referencehttps://support.microsoft.com/help/5071876
- referencehttps://support.microsoft.com/help/5071874