CVE-2023-20207: Duo Authentication Proxy

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability in the logging component of Cisco Duo Authentication Proxy could allow an authenticated, remote attacker to view sensitive information in clear text on an affected system. This vulnerability exists because certain unencrypted credentials are stored. An attacker could exploit this vulnerability by accessing the logs on an affected system and obtaining credentials that they may not normally have access to. A successful exploit could allow the attacker to view sensitive information in clear text.

Affected products

• Duo Authentication Proxy: version 5.8.1 only; version 6.0.0 only

Published 2023-07-12. Last modified 2026-06-17.