CVE-2026-69380

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23 CWE-862

Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

CVSS Score

8.1

High

EPSS — Exploit Probability

0.7%

Riskier than 52% of all CVEs · checked 2026-10-21

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

Patch available

Vendor fix published

2 articles across 2 outlets · first covered Sep 8, 2026 · latest Sep 9, 2026

Coverage timeline