PT-2026-47972 · Microsoft · Exchange Server 2016 Cumulative Update 23+3

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-45500

NVD

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-45500

Affected Products

Exchange Server 2016 Cumulative Update 23

Exchange Server 2019 Cumulative Update 14

Exchange Server 2019 Cumulative Update 15

Exchange Server Subscription Edition Rtm

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-45500 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45500 · Vendor Advisory