CVE-2023-20199: medium-severity vulnerability in Cisco Duo
Cisco Duo Two-Factor Authentication for macOS Authentication Bypass Vulnerability
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.2epss 0.3%
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 vulnerability is due to the incorrect handling of responses from Cisco Duo when the application is configured to fail open. An attacker with primary user credentials could exploit this vulnerability by attempting to authenticate to an affected device. A successful exploit could allow the attacker to access the affected device without valid permission.
CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Affected products
Cisco · Cisco DuoRelated CVEs — Cisco Duo
In the same product, most dangerous first.
CVE-2022-20662MEDIUMCisco Duo for macOS Authentication Bypass VulnerabilityEPSS 0.4%CVE-2025-20258MEDIUMCVE-2025-20258EPSS 0.3%CVE-2024-20301MEDIUMCVE-2024-20301EPSS 0.3%CVE-2023-20123MEDIUMCisco Duo Authentication for macOS and Duo Authentication for Windows Logon Offline Credentials Replay VulnerabilityEPSS 0.2%CVE-2024-20292MEDIUMCVE-2024-20292EPSS 0.1%