Type Confusion Vulnerability in Microsoft Office Software
CVE-2026-26110

8.4HIGH

Key Information:

Vendor

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

What is CVE-2026-26110?

A type confusion vulnerability exists in Microsoft Office that may allow an unauthorized attacker to execute arbitrary code on affected installations. This flaw occurs when the software incorrectly handles resource types, leading to a breach of security protocols. Users are recommended to apply the latest security updates provided by Microsoft to mitigate the risks associated with this vulnerability.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2016 32-bit Systems 16.0.0 < 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:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.