CVE-2023-20012

Status: ModifiedMedium (4.6)—

A vulnerability in the CLI console login authentication of Cisco Nexus 9300-FX3 Series Fabric Extender (FEX) when used in UCS Fabric Interconnect deployments could allow an unauthenticated attacker with physical access to bypass authentication. This vulnerability is due to the improper implementation of the password validation function. An attacker could exploit this vulnerability by logging in to the console port on an affected device. A successful exploit could allow the attacker to bypass authentication and execute a limited set of commands local to the FEX, which could cause a device reboot and denial of service (DoS) condition.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base score: 4.6

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.29%
Percentile among all scored CVEs: 20
Score date: 10/6/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (6)

Cisco — Nexus 93180yc-fx3 Firmware Cisco — Nexus 93180yc-fx3s Firmware Cisco — UCS 64108 Firmware Cisco — UCS 6454 Firmware Cisco — UCS 6536 Firmware Cisco — UCS Central Software

CWEs

CWE-287
CWE-287

References

Raw JSON (NVD)

Show

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