CVE-2018-8626

Name: CVE-2018-8626
Creator: NVD / NIST
Published: 2018-12-12T00:29:01.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 21.12%

Last modified Jun 17, 2026

CVE-2018-8626 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 21.12% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

21.12%

97.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Microsoft	Windows 10	1607
Microsoft	Windows 10	1709
Microsoft	Windows 10	1803
Microsoft	Windows 10	1809
Microsoft	Windows Server 2012	r2
Microsoft	Windows Server 2016	All versions
Microsoft	Windows Server 2016	1709
Microsoft	Windows Server 2016	1803
Microsoft	Windows Server 2019	All versions

References

http://www.securityfocus.com/bid/106076Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8626Patch, Vendor Advisory
http://www.securityfocus.com/bid/106076Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8626Patch, Vendor Advisory

Timeline

Published: Dec 12, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-8626?

How severe is CVE-2018-8626?

Severity scoring for CVE-2018-8626 is pending analysis. The EPSS model estimates a 21.12% probability of exploitation in the next 30 days.

How do I fix CVE-2018-8626?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-8626?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST