Windows GDI Information Disclosure Vulnerability in Microsoft Products
CVE-2026-83651

6.5MEDIUM

Key Information:

Vendor

Microsoft
Status
Microsoft Office 365 For Mac
Microsoft Office For Android
Microsoft Office Ltsc For Mac 2021
Microsoft Office Ltsc For Mac 2024
Vendor
CVE Published:
13 October 2026

What is CVE-2026-83651?

An out-of-bounds read vulnerability in Windows Graphics Device Interface (GDI) enables attackers to access sensitive information over a network. When exploited, this flaw may allow unauthorized actors to disclose information that could potentially be used to compromise systems or gain insights into network activities. Users and administrators are advised to stay informed on updates and apply necessary patches to secure their environments.

Affected Version(s)

Microsoft Office 365 for Mac 1.0.0 < 16.114.26101123

Microsoft Office for Android 16.0.1 < 16.0.20430.20000

Microsoft Office LTSC for Mac 2021 16.0.1 < 16.114.26101123

References

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

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.