id: CVE-2025-53690 info: name: "Sitecore Experience Manager - Insecure Deserialization" author: vedas-arpsyndicate severity: critical 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. reference: - https://www.exploit.observer/?keyword=CVE-2025-53690&match=exact - https://subdomain.center/?engine=ammonites&keyword=sitecore&match=exact classification: cve-id: CVE-2025-53690 metadata: verified: false tags: cve,cve2025,kev,sitecore,deserialization,rce,zero-day http: - method: GET path: - "{{BaseURL}}/sitecore/shell/sitecore.version.xml" extractors: - type: regex name: major part: body group: 1 regex: - '\b(\d)(\d)\d{6,}\b' internal: true - type: regex name: minor part: body group: 2 regex: - '\b(\d)(\d)\d{6,}\b' internal: true - type: dsl name: version dsl: - major + "." + minor internal: false matchers-condition: and matchers: - type: status status: - 200 - type: word words: - "Sitecore Corporation" part: body - type: dsl dsl: - compare_versions(version, "<= 9.0")