CVE-2018-8626

Windows DNS Server Heap Overflow Vulnerability

CVE-2018-8626 is fixed in 19 products on 1 platform, first by KB4471321, released December 11, 2018. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
9.8
Critical
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.2124
97th percentile

<p>A remote code execution vulnerability exists in Windows <a href="undefinedhttps://technet.microsoft.com/en-us/library/security/dn848375.aspx#DNS">Domain Name System (DNS)</a> servers when they fail to properly handle requests. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the Local System Account. Windows servers that are configured as DNS servers are at risk from this vulnerability.</p> <p>To exploit the vulnerability, an unauthenticated attacker could send malicious requests to a Windows DNS server.</p> <p>The update addresses the vulnerability by modifying how Windows DNS servers handle requests.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1607 for 32-bit Systems 14393.2665 KB4471321 Dec 11, 2018
Windows 10 Version 1607 for x64-based Systems 14393.2665 KB4471321 Dec 11, 2018
Windows 10 Version 1709 for 32-bit Systems 16299.846 KB4471329 Dec 11, 2018
Windows 10 Version 1709 for ARM64-based Systems 16299.846 KB4471329 Dec 11, 2018
Windows 10 Version 1709 for x64-based Systems 16299.846 KB4471329 Dec 11, 2018
Windows 10 Version 1803 for 32-bit Systems 17134.471 KB4471324 Dec 11, 2018
Windows 10 Version 1803 for ARM64-based Systems 17134.471 KB4471324 Dec 11, 2018
Windows 10 Version 1803 for x64-based Systems 17134.471 KB4471324 Dec 11, 2018
Windows 10 Version 1809 for 32-bit Systems 17763.194 KB4471332 Dec 11, 2018
Windows 10 Version 1809 for ARM64-based Systems 17763.194 KB4471332 Dec 11, 2018
Windows 10 Version 1809 for x64-based Systems 17763.194 KB4471332 Dec 11, 2018
Windows Server 2012 R2 KB4471320 Dec 11, 2018
Windows Server 2012 R2 KB4471322 Dec 11, 2018
Windows Server 2012 R2 (Server Core installation) KB4471320 Dec 11, 2018
Windows Server 2012 R2 (Server Core installation) KB4471322 Dec 11, 2018
Windows Server 2016 14393.2665 KB4471321 Dec 11, 2018
Windows Server 2016 (Server Core installation) 14393.2665 KB4471321 Dec 11, 2018
Windows Server 2019 17763.194 KB4471332 Dec 11, 2018
Windows Server 2019 (Server Core installation) 17763.194 KB4471332 Dec 11, 2018
Windows Server, version 1709 (Server Core Installation) 16299.846 KB4471329 Dec 11, 2018
Windows Server, version 1803 (Server Core Installation) 17134.471 KB4471324 Dec 11, 2018