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.

CVSS 3.1

9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

61% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-25)

CISA KEV

listed 2025-09-04, due 2025-09-25

CWE

CWE-502

Published

2025-09-03

Modified

2026-10-18

Record from

the NVD, synced 2026-10-19

Affected

• sitecore:experience_commerce
• sitecore:experience_manager
• sitecore:experience_platform
• sitecore:managed_cloud

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

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