CVE-2026-63020
3.1 · LOWA 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…
Overview
CVE-2026-63020 is a low-severity vulnerability affecting f5 big-ip_access_policy_manager. It was published on September 2, 2026 and has a CVSS 3.1 base score of 3.1 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.1, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from f5. Update big-ip_access_policy_manager to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| f5 | big-ip_access_policy_manager | 17.1.0 | Affected |
| f5 | big-ip_advanced_firewall_manager | 17.1.0 | Affected |
| f5 | big-ip_advanced_web_application_firewall | 17.1.0 | Affected |
| f5 | big-ip_analytics | 17.1.0 | Affected |
| f5 | big-ip_application_acceleration_manager | 17.1.0 | Affected |
| f5 | big-ip_application_security_manager | 17.1.0 | Affected |
| f5 | big-ip_application_visibility_and_reporting | 17.1.0 | Affected |
| f5 | big-ip_automation_toolchain | 17.1.0 | Affected |
| f5 | big-ip_carrier-grade_nat | 17.1.0 | Affected |
| f5 | big-ip_container_ingress_services | 17.1.0 | Affected |
| f5 | big-ip_ddos_hybrid_defender | 17.1.0 | Affected |
| f5 | big-ip_domain_name_system | 17.1.0 | Affected |
| f5 | big-ip_edge_gateway | 17.1.0 | Affected |
| f5 | big-ip_fraud_protection_service | 17.1.0 | Affected |
| f5 | big-ip_global_traffic_manager | 17.1.0 | Affected |
| f5 | big-ip_link_controller | 17.1.0 | Affected |
| f5 | big-ip_local_traffic_manager | 17.1.0 | Affected |
| f5 | big-ip_policy_enforcement_manager | 17.1.0 | Affected |
| f5 | big-ip_ssl_orchestrator | 17.1.0 | Affected |
| f5 | big-ip_webaccelerator | 17.1.0 | Affected |
References
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Frequently asked questions
What is CVE-2026-63020?
CVE-2026-63020 is a low-severity vulnerability affecting f5 big-ip_access_policy_manager. It was published on September 2, 2026 and has a CVSS 3.1 base score of 3.1 (LOW).
How severe is CVE-2026-63020?
This vulnerability has a CVSS 3.1 base score of 3.1, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-63020?
Check the references section for vendor advisories and patches from f5. Update big-ip_access_policy_manager to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-63020?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-63020 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
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