CVE-2026-62912: Microsoft Exchange Server Denial of Service Vulnerability
Overview
- Severity
- Medium (CVSS 6.5)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
- Category
- Denial of Service
- Exploit Status
- Not Exploited
- Exploitation Likelihood
- Less Likely
- Patch Tuesday
- 2026-Aug
- Released
- 2026-08-11
Description
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
Affected Products (4)
Server Software
- Microsoft Exchange Server Subscription Edition RTM
ESU
- Microsoft Exchange Server 2019 Cumulative Update 15
- Microsoft Exchange Server 2016 Cumulative Update 23
- Microsoft Exchange Server 2019 Cumulative Update 14
Security Updates (1)
Acknowledgments
ECooper with Aretiq.AI
, ECooper with Aretiq.AI
Revision History
- 2026-08-11: Information published.