Sitecore Multiple Products Deserialization of Untrusted Data
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA deadline 2025-09-25 · passed 11 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
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.
Who is affected
Sitecore Multiple Products. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-502.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 11 months ago
Sources
- NVD entry for CVE-2025-53690 nvd.nist.gov/vuln/detail/CVE-2025-53690
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- support.sitecore.com support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2025-53690