CVE-2025-53690: Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability

CVE ID

CVE-2025-53690

Vulnerability Name

Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability

• Project: Sitecore
• Product: Multiple Products

Date

• Date Added: 2025-09-04
• Due Date: 2025-09-25

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.

Known To Be Used in Ransomware Campaigns?

Unknown

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.

Additional Notes

https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865 ; https://nvd.nist.gov/vuln/detail/CVE-2025-53690

Related Security News

• Microsoft September 2025 Patch Tuesday fixes 81 flaws, two zero-days
• CISA Orders Immediate Patch of Critical Sitecore Vulnerability Under Active Exploitation
• Hackers exploited Sitecore zero-day flaw to deploy backdoors

More CVEs Info

Common Vulnerabilities & Exposures (CVE) List