Buffer Over-read Vulnerability in Windows GDI+ by Microsoft
CVE-2026-20846

7.5HIGH

Key Information:

Vendor: Microsoft
Status: Microsoft Office For Android; Windows 10 Version 1607; Windows 10 Version 1809; Windows 10 Version 21h2
Vendor: CVE Published:; 10 February 2026

What is CVE-2026-20846?

The vulnerability in Windows GDI+ pertains to a buffer over-read issue that could allow an unauthorized attacker to disrupt service over a network. This flaw poses significant risks by potentially enabling denial of service attacks, affecting the stability and availability of the system.

Affected Version(s)

Microsoft Office for Android 16.0.1 < 16.0.19822.20000

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.8868

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.8389

References

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

vendor-advisorypatch

CVSS V3.1

Score:

7.5

Severity:

HIGH

Confidentiality:

None

Integrity:

None

Availability:

None

Attack Vector:

Network

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

None

Scope:

Unchanged

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Feb 10, 2026
Vulnerability Reserved
Dec 3, 2025

CVE-2026-20846 Data

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