{"id":"CVE-2026-15638","title":"An unauthenticated user with access to Secret Server could leverage a padding oracle to decrypt or encrypt data using one of the server's cryptographic keys","summary":"An unauthenticated user with access to Secret Server could leverage a padding oracle to decrypt or encrypt data using one of the server's cryptographic keys. The key itself is not exposed.","severity":"critical","cvss":9.1,"cvssVector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:H/SA:H","cwe":["CWE-327"],"vendor":"Delinea","product":"Secret Server (On-Prem)","affected":["secret_server_on-prem >= 10.5.1 <= 12.1.3"],"published":"2026-09-16","updated":"2026-09-18","sourceUpdated":"2026-09-18T19:34:36.657","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-15638","references":[{"url":"https://delinea.com/security-advisories","label":"1443cd92-d354-46d2-9290-d812316ca43a"}],"tags":["nvd","cve.org"],"epss":0.00201,"epssPercentile":0.1034,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-16T19:36:39.986689Z"},"cvssSource":"cna","ingestedAt":"2026-09-15T23:46:25.572Z","slug":"CVE-2026-15638","body":"## Overview\n\nAn unauthenticated user with access to Secret Server could leverage a padding oracle to decrypt or encrypt data using one of the server's cryptographic keys. The key itself is not exposed.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}