CVE-2022-1388
KEVRansomware UseF5 BIG-IP Missing Authentication Vulnerability
Description
F5 BIG-IP contains a missing authentication in critical function vulnerability which can allow for remote code execution, creation or deletion of files, or disabling services.
On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all 12.1.x and 11.6.x versions, undisclosed requests may bypass iControl REST authentication. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
CVSS 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HPublishedMay 5, 2022
Last modifiedJun 17, 2026
Added to KEVMay 10, 2022
Remediation dueMay 31, 2022
References
- packetstormsecurity.com/files/167007/F5-BIG-IP-Remote-Code-Execution.htmlExploitThird Party Advisory
- packetstormsecurity.com/files/167118/F5-BIG-IP-16.0.x-Remote-Code-Execution.htmlExploitThird Party Advisory
- packetstormsecurity.com/files/167150/F5-BIG-IP-iControl-Remote-Code-Execution.htmlExploitThird Party Advisory
- support.f5.com/csp/article/K23605346MitigationVendor Advisory
- secpod.com/blog/critical-f5-big-ip-remote-code-execution-vulnerability-patch-now/ExploitMitigation
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-1388US Government Resource
0 recent articles mention this CVE
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Risk assessment · Critical
Actively exploited and used by ransomware crews. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1610 days
- Ransomware
- Used in known ransomware campaigns
- CVSS
- 9.8 CRITICAL
- EPSS (30-day exploit probability)
- 100.0% · top 1% of all CVEs
- Weakness
- CWE-306
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
- 5.Verify offline/immutable backups and segment the affected systems. This flaw is used for ransomware initial access.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.