CVE-2026-62912: Microsoft Exchange Server

Medium severity, CVSS 6.5. EPSS: 2% chance of exploitation in the next 30 days.

Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.

Affected products

• Microsoft Exchange Server: version 2016 only; version 2019 only
• Microsoft Exchange Server Subscription Edition: before 15.02.2562.046 (fixed in 15.02.2562.046)

Published 2026-08-11. Last modified 2026-08-13.