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LOW · 3.1

CVE-2026-63020

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 acc...

Vulnerability 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 Score

3.1

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
F5Big-Ip Access Policy Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Advanced Firewall Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Advanced Web Application Firewall>= 17.1.0, <= 17.1.3
F5Big-Ip Analytics>= 17.1.0, <= 17.1.3
F5Big-Ip Application Acceleration Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Application Security Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Application Visibility And Reporting>= 17.1.0, <= 17.1.3
F5Big-Ip Automation Toolchain>= 17.1.0, <= 17.1.3
F5Big-Ip Carrier-Grade Nat>= 17.1.0, <= 17.1.3
F5Big-Ip Container Ingress Services>= 17.1.0, <= 17.1.3
F5Big-Ip Ddos Hybrid Defender>= 17.1.0, <= 17.1.3
F5Big-Ip Domain Name System>= 17.1.0, <= 17.1.3
F5Big-Ip Edge Gateway>= 17.1.0, <= 17.1.3
F5Big-Ip Fraud Protection Service>= 17.1.0, <= 17.1.3
F5Big-Ip Global Traffic Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Link Controller>= 17.1.0, <= 17.1.3
F5Big-Ip Local Traffic Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Policy Enforcement Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Ssl Orchestrator>= 17.1.0, <= 17.1.3
F5Big-Ip Webaccelerator>= 17.1.0, <= 17.1.3

Related Weaknesses (CWE)

CWE-451

References

FAQ

What is CVE-2026-63020?

CVE-2026-63020 is a vulnerability with a CVSS score of 3.1 (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 authenticated BIG-IP users into acc...

How severe is CVE-2026-63020?

CVE-2026-63020 has been rated LOW with a CVSS base score of 3.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-63020?

Check the references section above for vendor advisories and patch information. Affected products include: F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Advanced Web Application Firewall, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager.