Auth bypass in Cisco Nx-Os Software

CVE-2020-3394

A vulnerability in the Enable Secret feature of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an authenticated, local attacker to issue the enable command and get full administrative privileges. To exploit this vulnerability, the attacker would need to have valid credentials for the affected device. The vulnerability is due to a logic error in the implementation of the enable command. An attacker could exploit this vulnerability by logging in to the device and issuing the enable command. A successful exploit could allow the attacker to gain full administrative privileges without using the enable password. Note: The Enable Secret feature is disabled by default.

EPSS: 0.003 (24.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-3394?
CVE-2020-3394 is a high-severity vulnerability in Cisco Nx-Os Software, classified under Improper Authorization. CVSS score: 7.8/10. Published 2020-08-27.
How severe is CVE-2020-3394?
High severity. CVSS v3 base score is 7.8 out of 10.