CVE-2021-1264

highpriority · track · 36EPSS 0.039 · 90 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.89% (90th) EPSS

CVSS 9 · high

Is it mine?

4 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in the Command Runner tool of Cisco DNA Center could allow an authenticated, remote attacker to perform a command injection attack. The vulnerability is due to insufficient input validation by the Command Runner tool. An attacker could exploit this vulnerability by providing crafted input during command execution or via a crafted command runner API call. A successful exploit could allow the attacker to execute arbitrary CLI commands on devices managed by Cisco DNA Center.

remediations

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

A vendor fix is available.

FixedCisco Digital Network Architecture Center (DNA Center)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

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

9.6

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.1–9.6

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.19.6criticalAV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · ENISA EU

v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · psirt@cisco.com USexploitability 3.1 · impact 5.8

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · Cisco PSIRT US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USCWE-78US

affected products (4)

Products and version ranges known to be affected.

Cisco Cisco Digital Network Architecture Center (DNA Center)all versionscisco_csafUS
Cisco Cisco Digital Network Architecture Center (DNA Center)≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco DNA Center≤ 1.3.1.0fstec_bduRU
cisco catalyst center< 1.3.1.0nvdUScpe:2.3:a:cisco:catalyst_center:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-dnac-cmdinj-erumsWh9Cisco DNA Center Command Runner Command Injection Vulnerability2021-01-20csaf · cisco_csafUS
A vulnerability in the Command Runner tool of Cisco DNA Center could allow an authenticated, remote attacker to perform a command injection attack. The vulnerability is due to insufficient input validation by the Command Runner tool. An attacker could exploit this vulnerability by providing crafted input during command execution or via a crafted command runner API call. A successful exploit could allow the attacker to execute arbitrary CLI commands on devices managed by Cisco DNA Center. 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 NVD CVE.org MITRE

published 2021-01-20modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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