Assessment
Why it matters
CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 100.0%; technical severity is CVSS 9.8.
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
Who should care
- Teams operating BIG-IP, Big-ip Access Policy Manager, Big-ip Advanced Firewall Manager +9 more
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether BIG-IP, Big-ip Access Policy Manager, Big-ip Advanced Firewall Manager +9 more is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Apply updates per vendor instructions.
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Vendor remediation
Patch and remediation links
Use the vendor source below to confirm the correct fixed version, package or mitigation for your affected product.
Technical details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-306
- Affected versions
- F5 BIG-IP; F5 Big-ip Access Policy Manager (Start Including: 16.1.0, End Excluding: 16.1.2.2); F5 Big-ip Advanced Firewall Manager (Start Including: 16.1.0, End Excluding: 16.1.2.2); F5 Big-ip Analytics (Start Including: 16.1.0, End Excluding: 16.1.2.2); F5 Big-ip Application Acceleration Manager (Start Including: 16.1.0, End Excluding: 16.1.2.2); F5 Big-ip Application Security Manager (Start Including: 16.1.0, End Excluding: 16.1.2.2); F5 Big-ip Domain Name System (Start Including: 16.1.0, End Excluding: 16.1.2.2); F5 Big-ip Fraud Protection Service (Start Including: 16.1.0, End Excluding: 16.1.2.2)
- Published
- 5 May 2022
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
Signal timeline
- CVE published
- Added to CISA KEV
- Latest EPSS score: 100.0%
- Signal calculated at 88