SB2026051445 - Improper access control in BIG-IP iControl SOAP
Published: May 14, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper access control (CVE-ID: CVE-2026-40631)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to escalate privileges or bypass Appliance mode restrictions.
The vulnerability exists due to improper access control in iControl SOAP when modifying configuration objects. A remote privileged user can modify configuration objects through iControl SOAP to escalate privileges or bypass Appliance mode restrictions.
In Appliance mode deployments, successful exploitation can cross a security boundary. This is a control plane issue only.
Remediation
Install update from vendor's website.