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CVE-2023-20014

HIGH
7.5
CVSS Score
Published: February 16, 2023 at 03:24 PM UTC
Updated: June 17, 2026 at 05:29 AM UTC
1 product affected across 1 vendorNexus Dashboard

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Severity
HIGH7.5
Exploit prediction
EPSS 1.0%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Nexus Dashboard· Cisco
95%
v < 2.3(1c)1.1(0c)1.1(0d)1.1(2h)1.1(2i)1.1(3c)1.1(3d)1.1(3e)1.1(3f)2.0(1b)2.0(1d)2.0(2g)2.0(2h)2.1(1d)2.1(1e)2.1(2d)2.1(2f)2.2(1e)2.2(1h)2.2(2d)
Affected range stops below 2.3(1c), so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ndb-dnsdos-bYscZOsu

CVSS

7.5HIGHcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-399CWE-400

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