#VU116778 Deserialization of Untrusted Data in Experience Manager and Sitecore Experience Platform - CVE-2025-27218

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Main Vulnerability Database Vulnerabilities #VU116778

#VU116778 Deserialization of Untrusted Data in Experience Manager and Sitecore Experience Platform - CVE-2025-27218

Published: October 8, 2025 / Updated: November 25, 2025


Vulnerability identifier: #VU116778
Vulnerability risk: Critical
CVSSv4.0: 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/E:A/U:Red
CVE-ID: CVE-2025-27218
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: The vulnerability is being exploited in the wild
Vulnerable software:
Experience Manager
Sitecore Experience Platform
Software vendor:
Sitecore

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. A remote attacker 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.

External links