CVE-2022-1388VulnerabilityPublished 05/10/2022Updated 10/24/2026

CVE-2022-1388: F5 BIG-IP Missing Authentication Vulnerability

Affects F5 BIG-IPSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 05/10/2022
KEV deadline: 05/31/2022
Ransomware: Used in ransomware campaigns
EPSS: 100.0% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2022-1388 (opens in a new tab)

Description

CVE-2022-1388 is a high-severity vulnerability in F5 BIG-IP that involves missing authentication in a critical function. This flaw allows remote attackers to execute arbitrary code, create or delete files, or disable services on affected systems. The vulnerability has been exploited in the wild and is known to be used in ransomware campaigns.

Summary

The F5 BIG-IP product contains a missing authentication vulnerability in a critical function, identified as CVE-2022-1388. This security flaw enables remote attackers to bypass authentication controls, leading to remote code execution, file manipulation, or service disruption. The vulnerability is actively exploited in the wild and has been linked to ransomware campaigns targeting affected systems.

Impact

Exploitation of this vulnerability can result in unauthorized remote code execution, allowing attackers to take full control of the affected BIG-IP system. Attackers can also create or delete files and disable critical services, potentially causing significant operational disruption and data compromise. The vulnerability's active exploitation and use in ransomware campaigns increase the risk to affected organizations.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is confirmed, organizations should monitor vendor communications closely and apply any recommended mitigations or workarounds provided by F5. Given the critical nature and active exploitation, timely application of official patches or mitigations is strongly advised once available.

Weaknesses

CWE-306Missing Authentication for Critical Function (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:40:37 UTC

Weaknesses

References

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