CVE-2026-45501

Microsoft Exchange Server Spoofing Vulnerability

CVSS 6.5 MEDIUMEPSS 0.3%CWE-918

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Affected products

Microsoft · Microsoft Exchange Server 2016 Cumulative Update 23 Microsoft · Microsoft Exchange Server 2019 Cumulative Update 14 Microsoft · Microsoft Exchange Server 2019 Cumulative Update 15 Microsoft · Microsoft Exchange Server Subscription Edition RTM

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References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45501