CVE-2026-70571
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Stack-based Buffer Overflow in Microsoft Exchange Server
Vulnerability report for CVE-2026-70571, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-13
Last updated on: 2026-10-14
Assigner: Microsoft Corporation
Description
Description
Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Microsoft | Microsoft | Exchange Server 2016 Cumulative Update 23 15.01.0.0 |
| Microsoft | Microsoft | Exchange Server 2019 Cumulative Update 14 15.02.0.0 |
| Microsoft | Microsoft | Exchange Server 2019 Cumulative Update 15 15.02.0.0 |
| Microsoft | Microsoft | Exchange Server Subscription Edition RTM 15.02.0.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-121 | 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). |
