Out-of-Bounds Read Vulnerability in Microsoft Office
CVE-2025-26642

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Office Online Server
Microsoft Sharepoint Server 2019
Microsoft Office 2019
Microsoft 365 Apps For Enterprise
Vendor
CVE Published:
8 April 2025

What is CVE-2025-26642?

Microsoft Office is susceptible to an out-of-bounds read vulnerability, which permits unauthorized attackers to execute arbitrary code locally. This flaw could lead to data exposure and system compromise, making it critical for users to apply the latest security updates and patches. The vulnerability emphasizes the importance of maintaining up-to-date software to mitigate risks.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Access 2016 (32-bit edition) Unknown 16.0.0 < 16.0.5495.1000

Microsoft Access 2016 x64-based Systems 16.0.0 < 16.0.5495.1000

References

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

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-26642 : Out-of-Bounds Read Vulnerability in Microsoft Office