F5 BIG-IP Config Page Spoof Error Vulnerability
CVE-2026-20732 Published on February 4, 2026
BIG-IP Configuration utility vulnerability
A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Vulnerability Analysis
CVE-2026-20732 is exploitable with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
User Interface (UI) Misrepresentation of Critical Information
The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks.
Products Associated with CVE-2026-20732
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Affected Versions
F5 BIG-IP:- Version 21.0.0 and below * is unaffected.
- Version 17.5.0 and below 17.5.1.4 is affected.
- Version 17.1.0 and below 17.1.3.1 is affected.
- Version 16.1.0 and below * is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.