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Vulnerability record · CVE-2018-8626 · published 12 December 2018

CVE-2018-8626: Microsoft windows 10 out-of-bounds write vulnerability

Microsoft · Windows 10

A remote code execution vulnerability exists in Windows Domain Name System (DNS) servers when they fail to properly handle requests, aka "Windows DNS Server Heap Overflow Vulnerability." This affects Windows Server 2012 R2, Windows Server 2019, Windows Server 2016, Windows 10, Windows 10 Servers.

9.8 CVSS 3.0 Critical EPSS 21% · top 2.5% CWE-787 · Out-of-bounds write
9.8CVSS 3.0 base score, v2 10.0
21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

A remote code execution vulnerability exists in Windows Domain Name System (DNS) servers when they fail to properly handle requests, aka "Windows DNS Server Heap Overflow Vulnerability." This affects Windows Server 2012 R2, Windows Server 2019, Windows Server 2016, Windows 10, Windows 10 Servers.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/106076 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8626 PatchVendor Advisory
http://www.securityfocus.com/bid/106076 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8626 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-8626), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.