#VU114796 Deserialization of Untrusted Data in Sitecore products - CVE-2025-53690
Published: September 4, 2025 / Updated: September 19, 2025
Vulnerability identifier: #VU114796
Vulnerability risk: Critical
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2025-53690
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
Experience Commerce
Experience Manager
Sitecore Experience Platform
Experience Commerce
Software vendor:
Sitecore
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 in ViewState. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
The vulnerability affects users who deployed any version of multiple Sitecore products using the sample key exposed in publicly available deployment guides (specifically Sitecore XP 9.0 and Active Directory 1.4 and earlier versions).Note, the vulnerability is being actively exploited in the wild.
Remediation
Install updates from vendor's website.