CVE-2026-26110

Microsoft Office Remote Code Execution Vulnerability

State: Published
Severity: 8.4 High
Published: Mar 10, 2026
Updated: Jun 19, 2026
Reserved: Feb 11, 2026

Description

Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.

Scores

CVSS	Score	Vector	Source
3.1	8.4 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')

Affected Products

Product	Versions
Microsoft 365 Apps for EnterpriseMicrosoft	16.0.1 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Office 2016Microsoft	16.0.0 to before 16.0.5543.1000Affected
Microsoft Office 2019Microsoft	19.0.0 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Office for AndroidMicrosoft	16.0.1 to before 16.0.19822.20000Affected
Microsoft Office LTSC 2021Microsoft	16.0.1 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Office LTSC 2024Microsoft	16.0.0 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Office LTSC for Mac 2021Microsoft	16.0.1 to before 16.107.26030819Affected
Microsoft Office LTSC for Mac 2024Microsoft	16.0.0 to before 16.107.26030819Affected

References

Microsoft Office Remote Code Execution Vulnerabilityvendor-advisorypatch

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