CVE-2026-63020
BIG-IP Configuration utility vulnerability
No known exploitation. EPSS puts it in the 12th percentile. Only a workaround so far.
What to do
No fixed build is published yet. The vendor describes a workaround.
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 12th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
9 events over 13 days, from the signal feeds we watch.
- Workaround availablerecord updated
- OpenVAS check added
- Workaround availablepublished, published, weakness classified, weakness classified, record updated
Affected products
- BIG-IPNetworking Infrastructure / router-switch
- big-ip access policy managerNetworking Infrastructure / firewall
- big-ip advanced firewall managerNetworking Infrastructure / firewall
- big-ip advanced web application firewallNetworking Infrastructure / firewall
- big-ip analyticsNetworking Infrastructure / network-management
- big-ip application acceleration managerNetworking Infrastructure / load-balancer-proxy
- big-ip application security managerNetworking Infrastructure / firewall
- big-ip application visibility and reportingNetworking Infrastructure / firewall
And 14 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Scored 3.1 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction RequiredA user must click a link, open a file, or perform some action
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality NoneNo confidentiality impact
- Integrity LowData modification is possible but limited in scope or consequence
- Availability NoneNo availability impact
Weaknesses
Sources
References in the record
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