Sep 2026: Microsoft Exchange Server Denial of Service Vulnerability
CVE-2026-69378 Published on September 8, 2026
Microsoft Exchange Server Denial of Service Vulnerability
Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny service over a network.
Weakness Type
What is a Stack Exhaustion Vulnerability?
The product does not properly control the amount of recursion which takes place, consuming excessive resources, such as allocated memory or the program stack.
CVE-2026-69378 has been classified to as a Stack Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-69378
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Affected Versions
Microsoft Exchange Server 2016 Cumulative Update 23:- Version 15.01.0.0 and below 15.01.2507.073 is affected.
- Version 15.02.0.0 and below 15.02.1544.046 is affected.
- Version 15.02.0.0 and below 15.02.1748.051 is affected.
- Version 15.02.0.0 and below 15.02.2562.049 is affected.