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OpenAdvisories
Medium · 6.5 CVE-2026-21527 EUVD-2026-7340GHSA-87gj-v6h3-c8p3

Microsoft Exchange Server Spoofing Vulnerability

Published Feb 10, 2026 · Updated Aug 19, 2026 · Assigned by microsoft

Description

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

Affected products

VendorProductAffectedFixed
Microsoft Microsoft Exchange Server 2016 Cumulative Update 23 15.01.0.0 – < 15.01.2507.066 15.01.2507.066
Microsoft Microsoft Exchange Server 2019 Cumulative Update 14 15.02.0.0 – < 15.02.1544.039 15.02.1544.039
Microsoft Microsoft Exchange Server 2019 Cumulative Update 15 15.02.0.0 – < 15.02.1748.043 15.02.1748.043
Microsoft Microsoft Exchange Server Subscription Edition RTM 15.02.0.0 – < 15.02.2562.037 15.02.2562.037

Advisories 4

References