Is CVE-2021-1303 in the CISA KEV catalog?

No. CVE-2021-1303 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-1303?

CVE-2021-1303 has a CVSS v3 base score of 8.8 (HIGH).

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

CVE-2021-1303 has an EPSS score of 1.40% (69th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-1303?

Upgrade catalyst center to 2.1.2.0 or later.

CVE & CISA-KEV Catalog

CVE-2021-1303

HIGH

8.8

CVSS v3

NVD

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.

CWE-266

How to fix

Remediation Available

catalyst centerNVD

Affected:< 2.1.2.0Fixed in:2.1.2.0CVE-2021-1303derived from NVD

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.40%probability of exploitation in 30 days

69thpercentile

Moderate risk: more likely to be exploited than 69% of all known CVEs.

References

Vendor Advisory1

tools.cisco.com

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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.