9.8

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

CVSS: 9.8v3.1CriticalKEVRansomwareAnalyzed
Published 05-05-2022Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2022-1388 is a critical (CVSS 9.8) vulnerability in F5 BIG-IP. It is known to be exploited: CISA lists it, first on 10-05-2022. It has been used in ransomware campaigns. EPSS estimates a 99.95% chance of exploitation in the next 30 days, higher than 99.9% of scored vulnerabilities. 6 public exploits are recorded.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
99.95%
0%100%
Critical · 0.00 pp in 30 days
KEVListedCISA
RansomwareKnown useFlagged by CISA
Public exploits6reference, metasploit, exploit-database

Timeline

  1. 05-05-2022
    PublishedVulnerability first disclosed.
  2. 10-05-2022
    Added to CISA KEVF5 BIG-IP Missing Authentication Vulnerability
  3. 31-05-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

Description

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 metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

99.95%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

0.00 pp

From 99.96% on 21-09-2026

21-09-202621-10-2026
EPSS score
99.95%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
10-05-2022
Federal due date
31-05-2022
Ransomware

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2022-1388

Public exploits

6 found
  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

Show all 6 exploits
  • referenceUnverified

    Exploit Reference (secpod.com)

    Maturity: unknown

  • MetasploitMetasploitremoteVerified

    F5 BIG-IP iControl RCE via REST Authentication Bypass

    exploit/linux/http/f5_icontrol_rce

    Maturity: weaponized

  • exploit-databaseremotemultipleUnverified

    F5 BIG-IP 16.0.x - Remote Code Execution (RCE)

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

F512 products
  • big-ip≥ 16.1.x, < 16.1.2.2 | ≥ 15.1.x, < 15.1.5.1 | ≥ 14.1.x, < 14.1.4.6 | ≥ 13.1.x, < 13.1.5 | ≥ 12.1.x, ≤ 12.1.6 | ≥ 11.6.x, ≤ 11.6.5
  • big-ip_access_policy_manager≥ 11.6.1, ≤ 11.6.5 | ≥ 12.1.0, ≤ 12.1.6 | ≥ 13.1.0, < 13.1.5 | ≥ 14.1.0, < 14.1.4.6 | ≥ 15.1.0, < 15.1.5.1 | ≥ 16.1.0, < 16.1.2.2
  • big-ip_advanced_firewall_manager≥ 11.6.1, ≤ 11.6.5 | ≥ 12.1.0, ≤ 12.1.6 | ≥ 13.1.0, < 13.1.5 | ≥ 14.1.0, < 14.1.4.6 | ≥ 15.1.0, < 15.1.5.1 | ≥ 16.1.0, < 16.1.2.2
  • big-ip_analytics≥ 11.6.1, ≤ 11.6.5 | ≥ 12.1.0, ≤ 12.1.6 | ≥ 13.1.0, < 13.1.5 | ≥ 14.1.0, < 14.1.4.6 | ≥ 15.1.0, < 15.1.5.1 | ≥ 16.1.0, < 16.1.2.2
  • big-ip_application_acceleration_manager≥ 11.6.1, ≤ 11.6.5 | ≥ 12.1.0, ≤ 12.1.6 | ≥ 13.1.0, < 13.1.5 | ≥ 14.1.0, < 14.1.4.6 | ≥ 15.1.0, < 15.1.5.1 | ≥ 16.1.0, < 16.1.2.2

1 vendor · 12 products

References

6 links