What is CVE-2022-20662?

CVE-2022-20662 is a medium-severity vulnerability in Cisco Duo, classified under Improper Authentication. CVSS score: 6.1/10. Published 2022-09-30.

How severe is CVE-2022-20662?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Auth bypass in Cisco Duo

CVE-2022-20662

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 the assigned user of a smart card is not properly matched with the authenticating user. An attacker could exploit this vulnerability by configuring a smart card login to bypass Duo authentication. A successful exploit could allow the attacker to use any personal identity verification (PIV) smart card for authentication, even if the smart card is not assigned to the authenticating user.

Vulnerability class: Broken Authentication

EPSS: 0.004 (28.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Cisco Duo — versions n/a
Cisco Duo

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2022-20662?: CVE-2022-20662 is a medium-severity vulnerability in Cisco Duo, classified under Improper Authentication. CVSS score: 6.1/10. Published 2022-09-30.
How severe is CVE-2022-20662?: Medium severity. CVSS v3 base score is 6.1 out of 10.