{"schema":"threatline.record/2","record":{"id":"CVE-2025-53690","aliases":[],"summary":"Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability","details":"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. ","categories":["Unclassified"],"product":"Multiple Products","vendor":"Sitecore","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-53690","source_modified_at":"2026-02-26T17:49:44.363Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Experience Manager (XM)","vendor":"Sitecore","versions":[{"lessThanOrEqual":"9.0","status":"affected","version":"0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-53690","source_modified_at":"2026-02-26T17:49:44.363Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Experience Platform (XP)","vendor":"Sitecore","versions":[{"lessThanOrEqual":"9.0","status":"affected","version":"0","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":9,"severity":"Critical","kev":{"listed":true,"date_added":"2025-09-04","due_date":"2025-09-25","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.60601,"percentile":0.99147,"score_date":"2026-10-23"},"published_at":"2025-09-03T20:04:48.223Z","modified_at":"2026-02-26T17:49:44.363Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2025-53690","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-02-26T17:49:44.363Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2025-53690","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53690","source":"CISA KEV"},{"source":"CVE List","url":"https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerability"},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53690","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"no","technical_impact":"total","assessed_at":"2025-09-05T03:55:32.553435Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-02-26T17:49:44.363Z","content_hash":"2a54c1cb67e5506515d7910935db2319aa4a8539442c0132f5d05b9eec413509"}}