{"id":"CVE-2025-53690","aliases":[],"url":"https://o3.security/vulnerability/CVE-2025-53690","summary":"Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Code Injection.This issue affects Experience Manager (XM):…","details":"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.","published":"2025-09-03T20:04:48.223Z","modified":"2026-02-26T17:49:44.363Z","cvss":{"score":9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"},"epss":{"score":0.51094,"percentile":0.98855,"asOf":"2026-09-08"},"cisaKev":null,"exploitsKnown":3,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerability"},{"type":"WEB","url":"https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53690"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-02-26T17:49:44.363Z"}}