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No exploitation reportedFix available

CVE-2021-1303

No exploitation reported by the sources we read.

  • Published2021-01-20
  • Fixed in2.1.2.0
  • WeaknessCWE-266

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability in the user management roles of Cisco DNA Center could allow an authenticated, remote attacker to execute unauthorized commands on an affected device. The vulnerability is due to improper enforcement of actions for assigned user roles. An attacker could exploit this vulnerability by authenticating as a user with an Observer role and executing commands on the affected device. A successful exploit could allow a user with the Observer role to execute commands to view diagnostic information of the devices that Cisco DNA Center manages.

Timeline

dates in UTC
  1. 2021-01-2020:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-1303?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-1303?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Cisco catalyst center
BranchAffectedFixed in
2.1< 2.1.2.02.1.2.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Cisco catalyst center to 2.1.2.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2024-11-08
  • OpenCVESSVC decisionnone—
  • NVDCVSS 3.18.8read 2026-10-23
  • CNACVSS 3.04.3read 2026-10-23
  • NVDCVSS 2.06.5read 2026-10-23
  • CNAweakness (CWE)CWE-266read 2026-10-23
  • FIRST EPSSEPSS score1.4 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2021-01-20
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2021-1303?

A vulnerability in the user management roles of Cisco DNA Center could allow an authenticated, remote attacker to execute unauthorized commands on an affected device. The vulnerability is due to improper enforcement of actions for assigned user roles. An attacker could exploit this vulnerability by authenticating as a user with an Observer role and executing commands on the affected device. A successful exploit could allow a user with the Observer role to execute commands to view diagnostic information of the devices that Cisco DNA Center manages.

Is CVE-2021-1303 actively exploited?

Active exploitation of CVE-2021-1303 has not been confirmed. Its EPSS score was 1.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-1303?

CVE-2021-1303 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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