CVE-2021-23025Network attack vector

Authenticated command execution via undisclosed TMUI input

Published Sep 14, 2021 · Updated Aug 3, 2024

Command injection in the F5 BIG-IP Configuration utility allows remote authenticated users to execute arbitrary system commands. F5 has not disclosed the affected page, parameter, or operation that passes untrusted input to an operating-system command. Access to the network-reachable Configuration utility with a valid account is required, and successful exploitation grants command execution on the appliance.

CVSS severity8.8
High
EPSS probability2.29%
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 the F5 BIG-IP Configuration utility allows remote authenticated users to execute arbitrary system commands. F5 has not disclosed the affected page, parameter, or operation that passes untrusted input to an operating-system command. Access to the network-reachable Configuration utility with a valid account is required, and successful exploitation grants command execution on the appliance.

The record

CVE
CVE-2021-23025
Published
Sep 14, 2021
Updated
Aug 3, 2024
Vendor
F5 Networks
Product
BIG-IP
Classifications
CWE-78, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=15.1.x before 15.1.0.5, 14.1.x before 14.1.3.1, 13.1.x before 13.1.3.5, and all versions of 12.1.x and 11.6.x

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

F5 Networks · BIG-IPversion=15.1.x before 15.1.0.5, 14.1.x before 14.1.3.1, 13.1.x before 13.1.3.5, and all versions of 12.1.x and 11.6.x

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

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')
T1210Exploitation of Remote Services

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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