CVE-2023-20014

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-01 · updated 2026-06-17
Weakness: CWE-399

Description

A vulnerability in the DNS functionality of Cisco Nexus Dashboard Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to the improper processing of DNS requests. An attacker could exploit this vulnerability by sending a continuous stream of DNS requests to an affected device. A successful exploit could allow the attacker to cause the coredns service to stop working or cause the device to reload, resulting in a DoS condition.

Affected products

Cisco Nexus Dashboard: before 2.3\(1c\) — fixed in 2.3\(1c\)

How to fix

Upgrade to a fixed version: Cisco Nexus Dashboard 2.3\(1c\). Check the vendor advisory for mitigations.

References

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