#VU122365 Spoofing attack in BIG-IP - CVE-2026-20732
Published: February 5, 2026
Vulnerability identifier: #VU122365
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2026-20732
CWE-ID: CWE-451
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
BIG-IP
BIG-IP
Software vendor:
F5 Networks
F5 Networks
Description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data. A remote attacker can trick authenticated BIG-IP users into accessing malicious links and reflect a spoofed error message in the victim's BIG-IP Configuration utility web browser session.
Remediation
Install updates from vendor's website.