SB2026090743 - SSRF in F5 BIG-IP and BIG-IQ Configuration utility
Published: September 7, 2026
Security Bulletin ID
SB2026090743
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2026-66842)
CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to server-side request forgery in the Configuration utility when handling an undisclosed request. A remote user can create administrative user accounts to escalate privileges.
This is a control plane issue only and has no data plane exposure.
Remediation
Install update from vendor's website.