High severity8.8NVD Advisory· Published Sep 13, 2018· Updated Jun 17, 2026

CVE-2018-8420

Description

A remote code execution vulnerability exists when the Microsoft XML Core Services MSXML parser processes user input, aka "MS XML Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

Affected products

Microsoft/msxml.dllllm-create
Microsoft/Windows 10 1909cpe-rescue
Range: 32-bit Systems
Microsoft/Windows Server 2003cpe-rescue
Range: version 1709 (Server Core Installation)
Microsoft/Windows 7cpe-rescue
Range: 32-bit Systems Service Pack 1
Microsoft/Windows 8.1cpe-rescue
Range: 32-bit systems
Microsoft/Windows Rt 8.1cpe-rescue
Range: Windows RT 8.1
Microsoft/Windows Server 2008cpe-rescue2 versions
32-bit Systems Service Pack 2+ 1 more
- (no CPE)range: 32-bit Systems Service Pack 2
- (no CPE)range: Itanium-Based Systems Service Pack 1
Microsoft/Windows Server 2012cpe-rescue2 versions
(Server Core installation)+ 1 more
- (no CPE)range: (Server Core installation)
- (no CPE)range: (Server Core installation)
Microsoft/Windows Server 2016cpe-rescue
Range: (Server Core installation)

Patches

Vulnerability mechanics

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8420nvdPatchVendor Advisory
www.securityfocus.com/bid/105259nvdThird Party AdvisoryVDB Entry
www.securitytracker.com/id/1041627nvdThird Party AdvisoryVDB Entry

News mentions

No linked articles in our index yet.

cvss	0.572
epss	0.039
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000