Type Confusion in Microsoft products - CVE-2026-26110
Published: March 11, 2026
Vulnerability identifier: #VU123849
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-26110
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error in Microsoft Office. A remote attacker can pass specially crafted data to the application, trigger a type confusion error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Microsoft 365 Apps for Enterprise
Microsoft Office
Microsoft Office LTSC
Microsoft Office for Android
Microsoft Office
Microsoft Office LTSC
Microsoft Office for Android
How to mitigate CVE-2026-26110
Install updates from vendor's website.
Microsoft Office - update to 16.0.5543.1000
Microsoft Office for Android - update to 16.0.19822.20000
Microsoft Office for Android - update to 16.0.19822.20000