Description
Improper input validation in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0.0 – < 15.01.2507.063 | 15.01.2507.063 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0.0 – < 15.02.1544.037 | 15.02.1544.037 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 15 | 15.02.0.0 – < 15.02.1748.042 | 15.02.1748.042 |
| Microsoft | Microsoft Exchange Server Subscription Edition RTM | 15.02.0.0 – < 15.02.2562.035 | 15.02.2562.035 |
Advisories 4
- WID-SEC-2025-2781 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 19, 2026
- WID-SEC-2025-2780 Microsoft Exchange Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 9, 2025
- NCSC-2025-0385 Kwetsbaarheden verholpen in Microsoft Exchange NCSC-NL (Netherlands) · Dec 9, 2025
- MSRC-CVE-2025-64666 Microsoft Exchange Server Elevation of Privilege Vulnerability Microsoft Security Response Center · Dec 9, 2025
References
- Microsoft Exchange Server Elevation of Privilege Vulnerability vendor-advisory patch