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

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Windows 11 Version 26h1
Windows 11 Version 26h1
Windows 10 Version 1809
Windows Server 2019
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.

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Affected Version(s)

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

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.6937

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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