Untrusted Pointer Dereference Vulnerability in Microsoft Office Excel
CVE-2026-26112

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft 365 Apps For Enterprise
Microsoft Excel 2016
Microsoft Office 2019
Microsoft Office Ltsc 2021
Vendor
CVE Published:
10 March 2026

What is CVE-2026-26112?

An untrusted pointer dereference vulnerability in Microsoft Office Excel allows an unauthorized attacker to potentially execute arbitrary code on the affected system. This can occur when Excel mishandles certain user inputs, enabling the execution of malicious payloads. Users are advised to apply the latest security updates to mitigate this risk and enhance their system's security.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Excel 2016 32-bit Systems 16.0.0.0 < 16.0.5543.1000

Microsoft Office 2019 32-bit Systems 19.0.0

References

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

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

.