A vulnerability in the debug logging function of Cisco Duo Authentication Proxy could allow an authenticated, high-privileged, remote attacker to view sensitive information in a system log file. This vulnerability is due to insufficient masking of sensitive information before it is written to system log files. An attacker could exploit this vulnerability by accessing logs on an affected system. A successful exploit could allow the attacker to view sensitive information that should be restricted. 

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Duo
  • Authentication Proxy

No data.

No data.

References
Link Providers
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvd36820 cve-icon cve-icon
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi2 cve-icon cve-icon
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-authproxlog-SxczXQ63 cve-icon cve-icon
https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-66682 cve-icon cve-icon
History

Sun, 24 Aug 2025 22:30:00 +0000

Type Values Removed Values Added
First Time appeared Duo
Duo authentication Proxy
Vendors & Products Duo
Duo authentication Proxy

Wed, 20 Aug 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 20 Aug 2025 16:45:00 +0000

Type Values Removed Values Added
Description A vulnerability in the debug logging function of Cisco Duo Authentication Proxy could allow an authenticated, high-privileged, remote attacker to view sensitive information in a system log file. This vulnerability is due to insufficient masking of sensitive information before it is written to system log files. An attacker could exploit this vulnerability by accessing logs on an affected system. A successful exploit could allow the attacker to view sensitive information that should be restricted. 
Title Cisco Duo Authentication Proxy Information Disclosure Vulnerability
Weaknesses CWE-200
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2025-08-20T16:26:32.520Z

Updated: 2025-08-20T18:43:54.617Z

Reserved: 2024-10-10T19:15:13.256Z

Link: CVE-2025-20345

cve-icon Vulnrichment

Updated: 2025-08-20T18:43:50.747Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-08-20T17:15:34.850

Modified: 2025-08-22T18:09:17.710

Link: CVE-2025-20345

cve-icon Redhat

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