by Kastro
Paper/Archive/CVE-2026-15638

CVE-2026-15638

Delinea Secret Server (On-Prem) — Cryptographic Padding Oracle

EPSS 0.2%CVSS 9.1
critical.is priorityof 100
30
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 12.4.124 × 202.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Secret Server (On-Prem)10.5.1 – 12.1.3–CNA

Scores by source

Delinea (CNA)9.1CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisorydelinea.com/security-advisories