CVE-2021-22990Network attack vector

Authenticated command execution via undisclosed TMUI pages

Published Mar 31, 2021 · Updated Aug 3, 2024

Authenticated remote command execution in F5 BIG-IP 11.6.x through 16.0.x allows remote authenticated users to execute commands through TMUI. The affected locus is one or more undisclosed Configuration utility pages, and F5 has not published the operation that mishandles request data. Reachability requires authenticated access and Advanced WAF or BIG-IP ASM to be provisioned; successful exploitation executes commands on the appliance.

CVSS severity7.2
High
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 remote command execution in F5 BIG-IP 11.6.x through 16.0.x allows remote authenticated users to execute commands through TMUI. The affected locus is one or more undisclosed Configuration utility pages, and F5 has not published the operation that mishandles request data. Reachability requires authenticated access and Advanced WAF or BIG-IP ASM to be provisioned; successful exploitation executes commands on the appliance.

The record

CVE
CVE-2021-22990
Published
Mar 31, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.0NIST NVDAV:N/AC:L/Au:S/C:C/I:C/A:C
7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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

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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