# CVE-2025-53690

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.

- Page: https://www.vulneraibility.com/cve/CVE-2025-53690
- CVSS: 9.0
- Known exploited: yes, in CISA KEV since 2025-09-04; CISA due date 2025-09-25
- EPSS: 60.60%
- Unvetted proof-of-concept code on GitHub: 3 GitHub proofs of concept (first 2025-09-04)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-09-05)
- Weakness: CWE-502
- Published: 2025-09-03

## Affected versions

- Sitecore Experience Manager (XM): affected <= 9.0
- Sitecore Experience Platform (XP): affected <= 9.0

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerability
- [other] https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53690

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.