September 4, 2025 · Applied Cybernetics Group
CVE-2025-53690 — Sitecore Multiple Products
Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability
- Added to KEV
2025-09-04- Federal due date
2025-09-25- Vendor
- Sitecore
- Product
- Multiple Products
- EPSS
- 98.0th percentile (score 0.308, as of
2026-07-13) - NVD CVSS v3.1
- 9 (CRITICAL)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-53690
CISA short 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.
NVD description
Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Code Injection.This issue affects Experience Manager (XM): through 9.0; Experience Platform (XP): through 9.0.