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Fencer Vulns
critical 9.8

CVE-2022-1388 kev+ ransomware in the critical feed json

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…

published 2022-05-05 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-24705

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2022-05-10, used in ransomware
epss
100.0%
EPSS 100.0% chance of exploitation in 30 days, percentile 99.9%
public exploits
2
Metasploit, Exploit-DB, plus a Nuclei check

Summary

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

Patch / fix

cisa required action Apply updates per vendor instructions.

  • F5 BIG-IP 13.1.5, 14.1.4.6, 15.1.5.1, 16.1.2.2

Timeline

  1. First public exploit (Metasploit exploit/linux/http/f5_icontrol_rce)
  2. Published
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
4 y ago
Patch by
2022-05-31 (4 y ago)
Ransomware
Known to be used in ransomware campaigns
Required action
Apply updates per vendor instructions.
Vendor, product
F5, BIG-IP
CISA name
F5 BIG-IP Missing Authentication Vulnerability

Ransomware

Groups reported to have exploited it in intrusions.

  • Pioneer Kitten suspected state-sponsored

reported by cisa.gov

Ransomware Vulnerability Matrix by BushidoUK (github.com/BushidoUK/Ransomware-Vulnerability-Matrix), reformatted per CVE. CC BY 4.0

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1548 Abuse Elevation Control Mechanism exploitation

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
21 mo ago

Exploit prediction

99.95% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/linux/http/f5_icontrol_rce F5 BIG-IP iControl RCE via REST Authentication Bypass metasploit exploit, excellent rank, 2022-05-04
  • EDB-50932 F5 BIG-IP 16.0.x - Remote Code Execution (RCE) remote, 2022-05-12
  • Nuclei template F5 BIG-IP iControl - REST Auth Bypass RCE nuclei detection template
  • packetstormsecurity.com http://packetstormsecurity.com/files/167007/F5-BIG-IP-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/167118/F5-BIG-IP-16.0.x-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/167150/F5-BIG-IP-iControl-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified
  • secpod.com https://www.secpod.com/blog/critical-f5-big-ip-remote-code-execution-vulnerability-patch-now/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • F5 BIG-IP

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.