#VU123813 Deserialization of Untrusted Data in Microsoft SharePoint Server and Microsoft SharePoint Enterprise Server - CVE-2026-26114
Published: March 11, 2026
Vulnerability identifier: #VU123813
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-26114
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Microsoft SharePoint Server
Microsoft SharePoint Enterprise Server
Microsoft SharePoint Server
Microsoft SharePoint Enterprise Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in Microsoft SharePoint Server. A remote user can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.