CVE-2025-20345 – Cisco Duo Authentication Proxy Sensitive Information Disclosure Vulnerability

The following table lists the changes that have been made to the
CVE-2025-20345 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Aug. 20, 2025

    Action Type Old Value New Value
    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. 

    Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
    Added CWE CWE-200
    Added Reference https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvd36820
    Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi2
    Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-authproxlog-SxczXQ63
    Added Reference https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-66682
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