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CVE-2026-63020

low

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…

Vendor / product: F5 — big-ip access policy manager

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
3.1
3.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Severity source: NVD CVSS v3.1 (f5sirt@f5.com)
Timeline (UTC)
Published: 2026-09-02 16:17
Modified: 2026-09-15 18:19
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 06:50 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

f5 / big-ip_access_policy_manager ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_advanced_firewall_manager ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_advanced_web_application_firewall ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_analytics ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_application_acceleration_manager ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_application_security_manager ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_application_visibility_and_reporting ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_automation_toolchain ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_carrier-grade_nat ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_container_ingress_services ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_ddos_hybrid_defender ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_domain_name_system ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_edge_gateway ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_fraud_protection_service ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_global_traffic_manager ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_link_controller ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_local_traffic_manager ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_policy_enforcement_manager ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_ssl_orchestrator ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_webaccelerator ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0
f5 / big-ip_websafe ≥17.1.0 ≤17.1.3, ≥17.5.0 ≤17.5.1, ≥21.0.0 ≤21.1.0

Weakness classification (CWE)

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://my.f5.com/manage/s/article/K000161728
Patch / mitigation: https://my.f5.com/manage/s/article/K000161728

References

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:50 UTC · record ↗

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