CVE-2021-1264Network attack vector

Authenticated command injection via Command Runner input

Published Jan 20, 2021 · Updated Nov 12, 2024

Command injection in Cisco Catalyst Center before 1.3.1.0 allows remote authenticated users to execute arbitrary CLI commands on managed devices. The Command Runner tool accepts crafted execution input or API parameters without sufficient validation, letting extra device CLI or configuration CLI commands bypass its approved-command list. Valid authenticated access to Command Runner or its API is required, and exploitation can alter or interrupt managed-device operation without disclosing data.

CVSS severity9.6
Critical
EPSS probability3.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Cisco Catalyst Center before 1.3.1.0 allows remote authenticated users to execute arbitrary CLI commands on managed devices. The Command Runner tool accepts crafted execution input or API parameters without sufficient validation, letting extra device CLI or configuration CLI commands bypass its approved-command list. Valid authenticated access to Command Runner or its API is required, and exploitation can alter or interrupt managed-device operation without disclosing data.

The record

CVE
CVE-2021-1264
Published
Jan 20, 2021
Updated
Nov 12, 2024
Vendor
ClamAV
Product
Cisco Catalyst Center
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Catalyst Centerversion=n/a

Published CVSS scores

8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:S/C:C/I:C/A:C
9.6Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H/E:X/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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