Stack-Based Buffer Overflow in Microsoft Exchange Server
CVE-2026-70571
8.1HIGH
Key Information:
What is CVE-2026-70571?
A stack-based buffer overflow vulnerability exists in Microsoft Exchange Server, which may allow an unauthorized attacker to execute arbitrary code over a network. This flaw can result from improperly validating input data, leading to potential exploitation of the server environment. Organizations using affected versions should apply the provided security updates to mitigate this risk.
Affected Version(s)
Microsoft Exchange Server 2016 Cumulative Update 23 x64-based Systems 15.01.0.0 < 15.01.2507.077
Microsoft Exchange Server 2019 Cumulative Update 14 x64-based Systems 15.02.0.0 < 15.02.1544.050
Microsoft Exchange Server 2019 Cumulative Update 15 x64-based Systems 15.02.0.0 < 15.02.1748.055