CVE-2021-22989Network attack vector

Authenticated command execution through undisclosed TMUI pages

Published Mar 31, 2021 · Updated Aug 3, 2024

Authenticated command execution in affected F5 Networks BIG-IP releases allows remote authenticated users to run system commands through TMUI. F5 identifies the locus only as undisclosed Configuration utility pages and has not published the request-handling or validation error that reaches command execution. The affected state requires Appliance mode, Advanced WAF or ASM provisioning, a listed vulnerable release, TMUI access, and valid high-privilege credentials.

CVSS severity9.1
Critical
EPSS probability8.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authenticated command execution in affected F5 Networks BIG-IP releases allows remote authenticated users to run system commands through TMUI. F5 identifies the locus only as undisclosed Configuration utility pages and has not published the request-handling or validation error that reaches command execution. The affected state requires Appliance mode, Advanced WAF or ASM provisioning, a listed vulnerable release, TMUI access, and valid high-privilege credentials.

The record

CVE
CVE-2021-22989
Published
Mar 31, 2021
Updated
Aug 3, 2024
Vendor
F5 Networks
Product
BIG-IP
Classifications
T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 31, 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

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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=16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, 11.6.x before 11.6.5.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

F5 Networks · BIG-IPversion=16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, 11.6.x before 11.6.5.3

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
9.0NIST NVDAV:N/AC:L/Au:S/C:C/I:C/A:C

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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