CVE-2026-15638 - Vulnerability Details - OpenCVE

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.

Published: 2026-09-15

Score: 9.1 Critical

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Delinea

Secret Server (On-Prem)

unaffected

Version	Status	Constraints
`10.5.1`	affected	≤ 12.1.3

No data.

No data.

No data available yet.

Remediation

Vendor Solution

Upgrade to secret server version 12.2.7 or later.

Tracking

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Advisories

No advisories yet.

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00201.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://delinea.com/security-advisories

History

Tue, 15 Sep 2026 23:30:00 +0000

Type	Values Removed	Values Added
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.
Title		Cryptographic Padding Oracle
Weaknesses		CWE-327
References		https://delinea.com/security-advisories
Metrics		cvssV4_0 `{'score': 9.1, 'vector': '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'}`

Subscriptions

No data.

MITRE

Status: PUBLISHED

Assigner: Delinea

Published: 2026-09-15T23:20:56.216Z

Updated: 2026-09-16T01:07:45.950Z

Reserved: 2026-07-13T18:18:20.775Z

Link: CVE-2026-15638

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-16T00:17:02.600

Modified: 2026-09-16T00:17:02.600

Link: CVE-2026-15638

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-327
Use of a Broken or Risky Cryptographic Algorithm

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