CriticalCritical vulnerability

CVE-2026-15638 (CVSS 9.1)

NVD · officialPublished Sep 16, 2026Risk 50/100EPSS 0.2%

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.

Technical details

CVSS

9.1

AV:NetworkAC:HighPR:NoneUI:None

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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