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VulnerabilityPublished Updated

CVE-2025-23239: F5 BIG-IP · Command Injection

Affects F5 BIG-IPSource CVE Database V5

0

Not known to be exploited · CVSS 8.7 High.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Feb 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
F5 BIG-IPAffected
  • =17.1.1
Fixed in–

AI-suggested

Organizations should immediately verify if they are running F5 BIG-IP version 17.1.1 in Appliance mode and restrict access to management interfaces to trusted administrators only. Implement strict network segmentation and multi-factor authentication for all privileged accounts to reduce the risk of credential compromise. Monitor logs and network traffic for unusual activity related to iControl REST API endpoints. Until an official patch is released, consider disabling or restricting access to the vulnerable iControl REST endpoint if possible, or apply vendor-recommended workarounds. Regularly audit privileged user accounts and rotate credentials to limit exposure. Employ intrusion detection systems tuned to detect command injection patterns and anomalous API usage. Stay informed through F5 security advisories for patch availability and apply updates promptly once released. Conduct thorough post-incident response planning to quickly contain and remediate any exploitation attempts.

Description

When running in Appliance mode, and logged into a highly-privileged role, an authenticated remote command injection vulnerability exists in an undisclosed iControl REST endpoint. A successful exploit can allow the attacker to cross a security boundary. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

References

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