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CVE-2025-53690 — Actively Exploited: Multiple Products (Sitecore)

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.

CVE IDCVE-2025-53690
VendorSitecore
ProductMultiple Products
Vulnerability nameSitecore Multiple Products Deserialization of Untrusted Data Vulnerability
Date added2025-09-04
Remediation due2025-09-25
Known ransomware useUnknown
Required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
DescriptionSitecore 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.
SourceCISA Known Exploited Vulnerabilities

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