Information Disclosure in Microsoft Office Word by Microsoft
CVE-2026-108438

6.5MEDIUM

Key Information:

Vendor

Microsoft
Status
Microsoft 365 Apps For Enterprise
Microsoft Office 365 For Mac
Microsoft Office Ltsc For Mac 2021
Microsoft Office Ltsc For Mac 2024
Vendor
CVE Published:
15 October 2026

What is CVE-2026-108438?

A use after free vulnerability in Microsoft Office Word has been identified, which could allow an unauthorized attacker to disclose sensitive information over a network. This issue can potentially compromise the confidentiality of data processed by the software. Users are advised to take immediate action to safeguard their systems by applying the latest security patches provided by Microsoft.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 365 for Mac 1.0.0 < 16.114.26101123

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

.