CVE-2025-53474: BIG-IP iRules vulnerability
Published Oct 15, 2025
·Updated
When an iRule using an ILX::call command is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected Software
83 affected components
F5 BIG-IP Access Policy Manager>=15.1.0<15.1.1.0.8
F5 BIG-IP Advanced Firewall Manager>=15.1.0<15.1.1.0.8
F5 Big-ip Advanced Web Application Firewall>=15.1.0<15.1.1.0.8
F5 BIG-IP Analytics>=15.1.0<15.1.1.0.8
F5 Big-ip Application Acceleration Manager>=15.1.0<15.1.1.0.8
F5 BIG-IP Application Security Manager>=15.1.0<15.1.1.0.8
F5 Big-ip Application Visibility And Reporting>=15.1.0<15.1.1.0.8
F5 Big-ip Automation Toolchain>=15.1.0<15.1.1.0.8
F5 Big-ip Carrier-grade Nat>=15.1.0<15.1.1.0.8
F5 BIG-IP Container Ingress Services>=15.1.0<15.1.1.0.8
F5 Big-ip Ddos Hybrid Defender>=15.1.0<15.1.1.0.8
F5 Big-ip Domain Name System>=15.1.0<15.1.1.0.8
F5 BIG-IP Edge Gateway>=15.1.0<15.1.1.0.8
F5 Big-ip Fraud Protection Service>=15.1.0<15.1.1.0.8
F5 Big-ip Global Traffic Manager>=15.1.0<15.1.1.0.8
F5 Big-ip Link Controller>=15.1.0<15.1.1.0.8
F5 Big-ip Local Traffic Manager>=15.1.0<15.1.1.0.8
F5 Big-ip Policy Enforcement Manager>=15.1.0<15.1.1.0.8
F5 BIG-IP SSL Orchestrator>=15.1.0<15.1.1.0.8
F5 Big-ip Webaccelerator>=15.1.0<15.1.1.0.8
F5 Big-ip Websafe>=15.1.0<15.1.1.0.8
F5 BIG-IP Access Policy Manager>=16.1.0<16.1.6.1
F5 BIG-IP Advanced Firewall Manager>=16.1.0<16.1.6.1
F5 Big-ip Advanced Web Application Firewall>=16.1.0<16.1.6.1
F5 BIG-IP Analytics>=16.1.0<16.1.6.1
F5 Big-ip Application Acceleration Manager>=16.1.0<16.1.6.1
F5 BIG-IP Application Security Manager>=16.1.0<16.1.6.1
F5 Big-ip Application Visibility And Reporting>=16.1.0<16.1.6.1
F5 Big-ip Automation Toolchain>=16.1.0<16.1.6.1
F5 Big-ip Carrier-grade Nat>=16.1.0<16.1.6.1
F5 BIG-IP Container Ingress Services>=16.1.0<16.1.6.1
F5 Big-ip Ddos Hybrid Defender>=16.1.0<16.1.6.1
F5 Big-ip Domain Name System>=16.1.0<16.1.6.1
F5 BIG-IP Edge Gateway>=16.1.0<16.1.6.1
F5 Big-ip Fraud Protection Service>=16.1.0<16.1.6.1
F5 Big-ip Global Traffic Manager>=16.1.0<16.1.6.1
F5 Big-ip Link Controller>=16.1.0<16.1.6.1
F5 Big-ip Local Traffic Manager>=16.1.0<16.1.6.1
F5 Big-ip Policy Enforcement Manager>=16.1.0<16.1.6.1
F5 BIG-IP SSL Orchestrator>=16.1.0<16.1.6.1
F5 Big-ip Webaccelerator>=16.1.0<16.1.6.1
F5 Big-ip Websafe>=16.1.0<16.1.6.1
F5 BIG-IP Access Policy Manager>=17.1.0<17.1.3
F5 BIG-IP Access Policy Manager>=17.5.0<=17.5.1
F5 BIG-IP Advanced Firewall Manager>=17.1.0<17.1.3
F5 BIG-IP Advanced Firewall Manager>=17.5.0<=17.5.1
F5 Big-ip Advanced Web Application Firewall>=17.1.0<17.1.3
F5 Big-ip Advanced Web Application Firewall>=17.5.0<=17.5.1
F5 BIG-IP Analytics>=17.1.0<17.1.3
F5 BIG-IP Analytics>=17.5.0<=17.5.1
F5 Big-ip Application Acceleration Manager>=17.1.0<17.1.3
F5 Big-ip Application Acceleration Manager>=17.5.0<=17.5.1
F5 BIG-IP Application Security Manager>=17.1.0<17.1.3
F5 BIG-IP Application Security Manager>=17.5.0<=17.5.1
F5 Big-ip Application Visibility And Reporting>=17.1.0<17.1.3
F5 Big-ip Application Visibility And Reporting>=17.5.0<=17.5.1
F5 Big-ip Automation Toolchain>=17.1.0<17.1.3
F5 Big-ip Automation Toolchain>=17.5.0<=17.5.1
F5 Big-ip Carrier-grade Nat>=17.1.0<17.1.3
F5 Big-ip Carrier-grade Nat>=17.5.0<=17.5.1
F5 BIG-IP Container Ingress Services>=17.1.0<17.1.3
F5 BIG-IP Container Ingress Services>=17.5.0<=17.5.1
F5 Big-ip Ddos Hybrid Defender>=17.1.0<17.1.3
F5 Big-ip Ddos Hybrid Defender>=17.5.0<=17.5.1
F5 Big-ip Domain Name System>=17.1.0<17.1.3
F5 Big-ip Domain Name System>=17.5.0<=17.5.1
F5 BIG-IP Edge Gateway>=17.1.0<17.1.3
F5 BIG-IP Edge Gateway>=17.5.0<=17.5.1
F5 Big-ip Fraud Protection Service>=17.1.0<17.1.3
F5 Big-ip Fraud Protection Service>=17.5.0<=17.5.1
F5 Big-ip Global Traffic Manager>=17.1.0<17.1.3
F5 Big-ip Link Controller>=17.1.0<17.1.3
F5 Big-ip Link Controller>=17.5.0<=17.5.1
F5 Big-ip Local Traffic Manager>=17.1.0<17.1.3
F5 Big-ip Local Traffic Manager>=17.5.0<=17.5.1
F5 Big-ip Policy Enforcement Manager>=17.1.0<17.1.3
F5 Big-ip Policy Enforcement Manager>=17.5.0<=17.5.1
F5 BIG-IP SSL Orchestrator>=17.1.0<17.1.3
F5 BIG-IP SSL Orchestrator>=17.5.0<=17.5.1
F5 Big-ip Webaccelerator>=17.1.0<17.1.3
F5 Big-ip Webaccelerator>=17.5.0<=17.5.1
F5 Big-ip Websafe>=17.1.0<17.1.3
F5 Big-ip Websafe>=17.5.0<=17.5.1
Event History
Oct 15, 2025
CVE Published
via MITRE·01:55 PM
Data Sourced
via MITRE·01:55 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·02:15 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-53474?
CVE-2025-53474 is considered to have a high severity due to its potential to cause the Traffic Management Microkernel to terminate.
2
How do I fix CVE-2025-53474?
To address CVE-2025-53474, ensure that you update to versions of F5 BIG-IP software that are not affected by this vulnerability.
3
What software is affected by CVE-2025-53474?
CVE-2025-53474 affects various versions of F5 BIG-IP products including Access Policy Manager, Advanced Firewall Manager, and others within the specified version range.
4
What is the cause of CVE-2025-53474?
CVE-2025-53474 is caused by undisclosed traffic issues when an iRule using the ILX::call command is configured on a virtual server.
5
Is there a workaround for CVE-2025-53474?
Currently, there are no specific workarounds recommended for CVE-2025-53474 other than updating to a patched version.