PT-2026-47974 · Microsoft · Exchange Server 2016 Cumulative Update 23+3

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-45502

Mitre

CVSS v3.1

5.0

Medium

Base vector

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

Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-45502

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://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45502 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-45502 · Security Note