Elevation of Privilege Vulnerability in Windows DNS by Microsoft
CVE-2026-62883

6.7MEDIUM

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1607
Windows 10 Version 1809
Windows 10 Version 21h2
Windows 10 Version 22h2
Vendor
CVE Published:
11 August 2026

What is CVE-2026-62883?

A numeric truncation error in Windows DNS allows an authorized attacker to gain elevated privileges on the affected system. This vulnerability can be exploited if the attacker has local access and can lead to unauthorized actions being performed with elevated permissions, potentially compromising the integrity and confidentiality of the system. Users are advised to apply any available security patches to mitigate the risks associated with this vulnerability.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.9418

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.9115

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7663

References

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

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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