CVE-2026-20732: BIG-IP Configuration utility vulnerability

Published Feb 4, 2026
·
Updated

A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages.

Affected Software

66 affected componentsFixes available
F5 BIG-IP
F5 BIG-IP>=17.5.0<=17.5.1, >=17.1.0<=17.1.3
17.5.1.417.1.3.1
F5 BIG-IP>=16.1.0<=16.1.6
F5 BIG-IP Access Policy Manager>=16.1.0<=16.1.6
F5 BIG-IP Advanced Firewall Manager>=16.1.0<=16.1.6
F5 Big-ip Advanced Web Application Firewall>=16.1.0<=16.1.6
F5 BIG-IP Analytics>=16.1.0<=16.1.6
F5 Big-ip Application Acceleration Manager>=16.1.0<=16.1.6
F5 BIG-IP Application Security Manager>=16.1.0<=16.1.6
F5 Big-ip Application Visibility And Reporting>=16.1.0<=16.1.6
F5 Big-ip Automation Toolchain>=16.1.0<=16.1.6
F5 Big-ip Carrier-grade Nat>=16.1.0<=16.1.6
F5 BIG-IP Container Ingress Services>=16.1.0<=16.1.6
F5 Big-ip Ddos Hybrid Defender>=16.1.0<=16.1.6
F5 Big-ip Domain Name System>=16.1.0<=16.1.6
F5 BIG-IP Edge Gateway>=16.1.0<=16.1.6
F5 Big-ip Fraud Protection Service>=16.1.0<=16.1.6
F5 Big-ip Global Traffic Manager>=16.1.0<=16.1.6
F5 Big-ip Link Controller>=16.1.0<=16.1.6
F5 Big-ip Local Traffic Manager>=16.1.0<=16.1.6
F5 Big-ip Policy Enforcement Manager>=16.1.0<=16.1.6
F5 BIG-IP SSL Orchestrator>=16.1.0<=16.1.6
F5 Big-ip Webaccelerator>=16.1.0<=16.1.6
F5 Big-ip Websafe>=16.1.0<=16.1.6
F5 BIG-IP Access Policy Manager>=17.1.0<17.1.3.1
F5 BIG-IP Access Policy Manager>=17.5.0<17.5.1.4
F5 BIG-IP Advanced Firewall Manager>=17.1.0<17.1.3.1
F5 BIG-IP Advanced Firewall Manager>=17.5.0<17.5.1.4
F5 Big-ip Advanced Web Application Firewall>=17.1.0<17.1.3.1
F5 Big-ip Advanced Web Application Firewall>=17.5.0<17.5.1.4
F5 BIG-IP Analytics>=17.1.0<17.1.3.1
F5 BIG-IP Analytics>=17.5.0<17.5.1.4
F5 Big-ip Application Acceleration Manager>=17.1.0<17.1.3.1
F5 Big-ip Application Acceleration Manager>=17.5.0<17.5.1.4
F5 BIG-IP Application Security Manager>=17.1.0<17.1.3.1
F5 BIG-IP Application Security Manager>=17.5.0<17.5.1.4
F5 Big-ip Application Visibility And Reporting>=17.1.0<17.1.3.1
F5 Big-ip Application Visibility And Reporting>=17.5.0<17.5.1.4
F5 Big-ip Automation Toolchain>=17.1.0<17.1.3.1
F5 Big-ip Automation Toolchain>=17.5.0<17.5.1.4
F5 Big-ip Carrier-grade Nat>=17.1.0<17.1.3.1
F5 Big-ip Carrier-grade Nat>=17.5.0<17.5.1.4
F5 BIG-IP Container Ingress Services>=17.1.0<17.1.3.1
F5 BIG-IP Container Ingress Services>=17.5.0<17.5.1.4
F5 Big-ip Ddos Hybrid Defender>=17.1.0<17.1.3.1
F5 Big-ip Ddos Hybrid Defender>=17.5.0<17.5.1.4
F5 Big-ip Domain Name System>=17.1.0<17.1.3.1
F5 Big-ip Domain Name System>=17.5.0<17.5.1.4
F5 BIG-IP Edge Gateway>=17.1.0<17.1.3.1
F5 BIG-IP Edge Gateway>=17.5.0<17.5.1.4
F5 Big-ip Fraud Protection Service>=17.1.0<17.1.3.1
F5 Big-ip Fraud Protection Service>=17.5.0<17.5.1.4
F5 Big-ip Global Traffic Manager>=17.1.0<17.1.3.1
F5 Big-ip Global Traffic Manager>=17.5.0<17.5.1.4
F5 Big-ip Link Controller>=17.1.0<17.1.3.1
F5 Big-ip Link Controller>=17.5.0.<17.5.1.4
F5 Big-ip Local Traffic Manager>=17.1.0<17.1.3.1
F5 Big-ip Local Traffic Manager>=17.5.0<17.5.1.4
F5 Big-ip Policy Enforcement Manager>=17.1.0<17.1.3.1
F5 Big-ip Policy Enforcement Manager>=17.5.0<17.5.1.4
F5 BIG-IP SSL Orchestrator>=17.1.0<17.1.3.1
F5 BIG-IP SSL Orchestrator>=17.5.0<17.5.1.4
F5 Big-ip Webaccelerator>=17.1.0<17.1.3.1
F5 Big-ip Webaccelerator>=17.5.0<17.5.1.4
F5 Big-ip Websafe>=17.1.0<17.1.3.1
F5 Big-ip Websafe>=17.5.0<17.5.1.4

Event History

Feb 4, 2026
Advisory Published
via F5·02:03 PM
Data Sourced
via F5·02:03 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·03:02 PM
Data Sourced
via MITRE·03:02 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·03:16 PM
DescriptionSeverityWeaknessAffected Software
Jun 21, 58091
Event
via NVD·08:11 PM
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Frequently Asked Questions

1

What is the severity of CVE-2026-20732?

The severity of CVE-2026-20732 is assessed as a medium risk due to the potential for error message spoofing.

2

How do I fix CVE-2026-20732?

To fix CVE-2026-20732, it is recommended to apply the latest security updates provided by F5 for the affected BIG-IP versions.

3

What versions are affected by CVE-2026-20732?

CVE-2026-20732 affects F5 BIG-IP versions between 17.1.0 to 17.1.3, 17.5.0 to 17.5.1, and 16.1.0 to 16.1.6.

4

Can CVE-2026-20732 be exploited remotely?

Yes, CVE-2026-20732 can be exploited remotely by an attacker through the exploit of the configuration utility page vulnerabilities.

5

What are the potential impacts of CVE-2026-20732 on my systems?

The potential impacts of CVE-2026-20732 include causing confusion and possible manipulation due to spoofed error messages displayed to users.

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