CVE-2026-69378

No fix known EPSS 1%CVSS 7.5

Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny service over a network.

Published 2026-09-08 · CVE record · OSV

Products: Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server Subscription Edition RTM