CVE-2023-20014

highpriority · track · 30EPSS 0.010 · 61 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.95% (61st) EPSS

CVSS 7.5 · high

Is it mine?

22 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Nexus Dashboardcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · psirt@cisco.com USexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Cisco PSIRT US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USprimaryCWE-20USCWE-399US

affected products (22)

Products and version ranges known to be affected.

Cisco Cisco Nexus Dashboardall versionscisco_csafUS
Cisco Cisco Nexus Dashboard≤ 2.1(2f)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 2.1(1e)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 1.1(3f)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 1.1(2i)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 2.1(2d)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 1.1(2h)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 2.2(1h)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 2.0(1b)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 1.1(3e)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 1.1(3d)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 1.1(3c)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 2.0(1d)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 2.1(1d)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 2.2(1e)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 1.1(0c)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 2.0(2g)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 2.2(2d)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 1.1(0d)enisa_euvdEU
Cisco Cisco Nexus Dashboard≤ 2.0(2h)enisa_euvdEU

showing 20 of 22

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-ndb-dnsdos-bYscZOsuCisco Nexus Dashboard Denial of Service Vulnerability2023-02-15csaf · cisco_csafUS
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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf NVD CVE.org MITRE

published 2023-03-01modified 2026-06-17

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references (5)

External citations — patches, advisories, analysis.

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