Privilege Elevation Vulnerability in Windows DHCP Server by Microsoft
CVE-2026-62803

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows Server 2012
Windows Server 2012 (server Core Installation)
Windows Server 2012 R2
Windows Server 2012 R2 (server Core Installation)
Vendor
CVE Published:
11 August 2026

What is CVE-2026-62803?

A vulnerability exists in the Windows DHCP Server that could allow an authorized attacker to exploit improper link resolution prior to file access, leading to potential privilege escalation. This weakness could enable the attacker to gain unauthorized access to system resources and execute unintended actions on the affected server.

Affected Version(s)

Windows Server 2012 (Server Core installation) x64-based Systems 6.2.9200.0 < 6.2.9200.26280

Windows Server 2012 R2 (Server Core installation) x64-based Systems 6.3.9600.0 < 6.3.9600.23338

Windows Server 2012 R2 x64-based Systems 6.3.9600.0 < 6.3.9600.23338

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.