CVE-2021-1303
HIGHEPSS 70th pctlDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Elevated risk: more likely to be exploited than 70% of all known CVEs.
References
Related Vulnerabilities
Other CWE-266 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-28000 | Critical | 9.8 | 68% | - | Fix |
| CVE-2025-27007 | Critical | 9.8 | 51% | - | - |
| CVE-2025-47539 | Critical | 9.8 | 33% | - | Fix |
| CVE-2022-20759 | High | 8.8 | 29% | - | Fix |
| CVE-2024-13106 | Medium | 5.3 | 27% | - | - |
| CVE-2024-3013 | Medium | 6.3 | 23% | - | - |
Common questions
How do I fix CVE-2021-1303?
Upgrade catalyst center to 2.1.2.0 or later.
Is CVE-2021-1303 being actively exploited?
Not that we know of. CVE-2021-1303 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.4% is the estimated probability that it will be exploited in the next 30 days. That is higher than 70% of all scored CVEs.
How severe is CVE-2021-1303?
CVE-2021-1303 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2021-1303 affect?
Published advisories record a fix for catalyst center (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-07-23.