Cisco Duo vulnerabilities

4 CVEs affecting Cisco Duo, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2025-20258, published 2025-05-21.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2022-20662, published 2022-09-30. Medium severity, CVSS 6.8. EPSS: 0.4% chance of exploitation in the next 30 days. A vulnerability in the smart card login authentication of Cisco Duo for macOS could allow an unauthenticated attacker with physical access to bypass authentication. This vulnerability exists because…
CVE-2025-20258, published 2025-05-21. Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days. A vulnerability in the self-service portal of Cisco Duo could allow an unauthenticated, remote attacker to inject arbitrary commands into emails that are sent by the service. This vulnerability is…
CVE-2023-20199, published 2023-06-28. Medium severity, CVSS 6.6. EPSS: 0.3% chance of exploitation in the next 30 days. A vulnerability in Cisco Duo Two-Factor Authentication for macOS could allow an authenticated, physical attacker to bypass secondary authentication and access an affected macOS device. This…
CVE-2023-20123, published 2023-04-05. Medium severity, CVSS 4.6. EPSS: 0.2% chance of exploitation in the next 30 days. A vulnerability in the offline access mode of Cisco Duo Two-Factor Authentication for macOS and Duo Authentication for Windows Logon and RDP could allow an unauthenticated, physical attacker to…