What’s Vulnerable › Vulnerabilities

CVE-2026-15638: Cryptographic Padding Oracle

• Severity: critical (CVSS 9.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-09-18
• Weakness: CWE-327

Description

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 products

• Delinea Secret Server (On-Prem): from 10.5.1 through 12.1.3

References

• https://delinea.com/security-advisories

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