Vendor / Project: Sitecore Product: Multiple Products Description: Sitecore Experience Manager (XM), Experience Platform (XP), Experience Commerce (XC), and Managed Cloud contain a deserialization of untrusted data vulnerability involving the use of default machine keys. This flaw allows attackers to exploit exposed ASP.NET machine keys to achieve remote code execution. Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Due Date: 2025-09-25 Ransomware Campaign Use: Unknown CWEs: CWE-502 Notes: https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865 ; https://nvd.nist.gov/vuln/detail/CVE-2025-53690