Heap-Based Buffer Overflow in Microsoft Office Excel
CVE-2025-47174

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft 365 Apps For Enterprise
Microsoft Office Ltsc 2021
Microsoft Office Ltsc 2024
Vendor
CVE Published:
10 June 2025

What is CVE-2025-47174?

A heap-based buffer overflow vulnerability in Microsoft Office Excel enables unauthorized attackers to execute code locally. By exploiting this flaw, attackers can manipulate the application's memory, leading potentially to arbitrary code execution on the affected system. Users of vulnerable versions should apply patches promptly to mitigate risks.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office LTSC 2021 x64-based Systems 16.0.1

Microsoft Office LTSC 2024 32-bit Systems 1.0.0

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

.