Medium · 5.3 CVE-2025-25007 EUVD-2025-24362GHSA-wcrj-9v56-hjqw

Microsoft Exchange Server Spoofing Vulnerability

Published Aug 12, 2025 · Updated Feb 13, 2026 · Assigned by microsoft

Vendor: Microsoft Product: Microsoft Exchange Server 2016 Cumulative Update 23 Product: Microsoft Exchange Server 2019 Cumulative Update 14 Product: Microsoft Exchange Server 2019 Cumulative Update 15 Product: Microsoft Exchange Server Subscription Edition RTM

Description

Improper validation of syntactic correctness of input in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

Affected products

Vendor	Product	Affected	Fixed
Microsoft	Microsoft Exchange Server 2016 Cumulative Update 23	15.01.0.0 – < 15.01.2507.058	15.01.2507.058
Microsoft	Microsoft Exchange Server 2019 Cumulative Update 14	15.02.0.0 – < 15.02.1544.033	15.02.1544.033
Microsoft	Microsoft Exchange Server 2019 Cumulative Update 15	15.02.0.0 – < 15.02.1748.036	15.02.1748.036
Microsoft	Microsoft Exchange Server Subscription Edition RTM	15.02.0.0 – < 15.02.2562.020	15.02.2562.020

Advisories 3

NCSC-2025-0252 Kwetsbaarheden verholpen in Microsoft Exchange Server NCSC-NL (Netherlands) · Aug 13, 2025
WID-SEC-2025-1781 Microsoft Exchange Server und Microsoft Exchange: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 12, 2025
MSRC-CVE-2025-25007 Microsoft Exchange Server Spoofing Vulnerability Microsoft Security Response Center · Aug 12, 2025

References

Microsoft Exchange Server Spoofing Vulnerability vendor-advisory patch