Oct 2026: Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2026-70571 Published on October 13, 2026
Microsoft Exchange Server Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
Weakness Type
What is a Stack Overflow Vulnerability?
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CVE-2026-70571 has been classified to as a Stack Overflow vulnerability or weakness.
Products Associated with CVE-2026-70571
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Affected Versions
Microsoft Exchange Server 2016 Cumulative Update 23:- Version 15.01.0.0 and below 15.01.2507.077 is affected.
- Version 15.02.0.0 and below 15.02.1544.050 is affected.
- Version 15.02.0.0 and below 15.02.1748.055 is affected.
- Version 15.02.0.0 and below 15.02.2562.056 is affected.