Untrusted Pointer Dereference in Microsoft products - CVE-2026-26112
Published: March 11, 2026
Vulnerability identifier: #VU123788
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-26112
CWE-ID: CWE-822
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Microsoft Office
Microsoft 365 Apps for Enterprise
Microsoft Excel
Microsoft Office LTSC
Office Online Server
Microsoft Office
Microsoft 365 Apps for Enterprise
Microsoft Excel
Microsoft Office LTSC
Office Online Server
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to untrusted pointer dereference in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted Office file and execute arbitrary code on the target system.
How to mitigate CVE-2026-26112
Install updates from vendor's website.