CVE-2025-53690
Sitecore Experience Manager (XM), Experience Platform (XP), Experience Commerce (XC), and Managed Cloud contain a deserialization of untrusted data…
Browse: All 2025 CVEs · All vendors
- CVSS score
- 9.0 Critical
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H- CISA KEV
- Yes — actively exploited (added 2025-09-04, remediation due 2025-09-25)
- Weakness (CWE)
- CWE-502
- Published
- 2025-09-03
- Last modified
- 2026-06-17
- NVD status
- Analyzed
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.
Affected products
- sitecore experience commerce
- sitecore experience manager
- sitecore experience platform
- sitecore managed cloud
Affected ranges per NVD CPE data; confirm exact versions in the vendor advisory.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Federal remediation deadline: 2025-09-25.
How to prioritize this
This vulnerability is on the CISA KEV list, meaning it is being actively exploited — treat it as urgent regardless of the raw CVSS number. Use the live CVE lookup for the latest NVD data, and the CVSS 3.1 calculator to model your own environmental score.
References
- https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerability
- https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53690
FAQ
Is CVE-2025-53690 actively exploited?
Yes. CISA added CVE-2025-53690 to its Known Exploited Vulnerabilities (KEV) catalog on 2025-09-04, with a federal remediation deadline of 2025-09-25. A KEV listing means real-world exploitation is confirmed, so patching this should be prioritized above many higher-CVSS bugs that aren't being exploited.
What is the CVSS score of CVE-2025-53690?
CVE-2025-53690 has a CVSS base score of 9.0 (Critical). Its vector string is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
Related vulnerabilities
- CVE-2019-9875 — Sitecore CMS and Experience Platform (XP)
- CVE-2019-9874 — Sitecore CMS and Experience Platform (XP)
- CVE-2021-42237 — Sitecore XP
- CVE-2021-23758 — Ajax.NET Professional Ajax.NET Professiona
- CVE-2026-63077 — JetBrains TeamCity
- CVE-2026-50522 — Microsoft SharePoint
Data source: NVD & CISA KEV. Shown as-is; nothing added. Last generated from NVD data — re-check the live tool for updates.
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