CVE-2026-63020
Received
Received - Intake
BIG-IP Configuration Utility Error Message Spoofing
Vulnerability report for CVE-2026-63020, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-02
Last updated on: 2026-09-02
Assigner: F5 Networks
Description
Description
A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages
Impact:
An attacker may 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. This is a
control plane issue; there is no data plane exposure.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| f5 | big-ip | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-451 | 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. |
