CVE-2025-4166 - CVE House
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Status published Medium CVE-2025-4166

Vault May Include Sensitive Data in Error Logs When Using the KV v2 Plugin

Vulnerability Description

Vault Community and Vault Enterprise Key/Value (kv) Version 2 plugin may unintentionally expose sensitive information in server and audit logs when users submit malformed payloads during secret creation or update operations via the Vault REST API. This vulnerability, identified as CVE-2025-4166, is fixed in Vault Community 1.19.3 and Vault Enterprise 1.19.3, 1.18.9, 1.17.16, 1.16.20.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Vault, Vault Enterprise
Vulnerable Versions:
0.3.0, 0.10.0

Timeline

Official Publish: May 2nd, 2025
Last Modified: May 8th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

Weaknesses (CWE)

CWE-209

MITRE ATT&CK TTPs

T1592 Gather Victim Host Information
Reconnaissance
T1083 File and Directory Discovery
Discovery
T1552 Unsecured Credentials
Credential Access
T1212 Exploitation for Defense Evasion
Defense Evasion
T1005 Data from Local System
Collection