Out-of-Bounds Read Vulnerability in Microsoft Excel
CVE-2025-54898

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Office Online Server
Microsoft Office 2019
Microsoft 365 Apps For Enterprise
Microsoft Office Ltsc For Mac 2021
Vendor
CVE Published:
9 September 2025

What is CVE-2025-54898?

An out-of-bounds read vulnerability in Microsoft Excel can allow an unauthorized attacker to execute code locally on a user's machine. This flaw permits exploitation through crafted Excel files, enabling attackers to potentially gain sensitive information or perform unauthorized actions. Users are advised to keep their software updated and monitor the official Microsoft advisory for patches and mitigation strategies.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Excel 2016 32-bit Systems 16.0.0.0 < 16.0.5517.1000

Microsoft Office 2019 32-bit Systems 19.0.0

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

.