---
id: CVE-2025-61951
title: "Undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.\_ This issue may occur when a Datagram Transport Layer Security (DTLS) 1.2 virtual server is enabled with a Server SSL profile that is configured with a …"
summary: "Undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.\_ This issue may occur when a Datagram Transport Layer Security (DTLS) 1.2 virtual server is enabled with a Server SSL profile that is configured with a …"
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-125
vendor: f5
product: big-ip_access_policy_manager
affected:
  - 'big-ip_access_policy_manager >= 16.1.0, < 16.1.6.1'
  - 'big-ip_advanced_firewall_manager >= 16.1.0, < 16.1.6.1'
  - 'big-ip_advanced_web_application_firewall >= 16.1.0, < 16.1.6.1'
  - 'big-ip_analytics >= 16.1.0, < 16.1.6.1'
  - 'big-ip_application_acceleration_manager >= 16.1.0, < 16.1.6.1'
  - 'big-ip_application_security_manager >= 16.1.0, < 16.1.6.1'
  - 'big-ip_application_visibility_and_reporting >= 16.1.0, < 16.1.6.1'
  - 'big-ip_automation_toolchain >= 16.1.0, < 16.1.6.1'
  - 'big-ip_carrier-grade_nat >= 16.1.0, < 16.1.6.1'
  - 'big-ip_container_ingress_services >= 16.1.0, < 16.1.6.1'
  - 'big-ip_ddos_hybrid_defender >= 16.1.0, < 16.1.6.1'
  - 'big-ip_domain_name_system >= 16.1.0, < 16.1.6.1'
  - 'big-ip_edge_gateway >= 16.1.0, < 16.1.6.1'
  - 'big-ip_fraud_protection_service >= 16.1.0, < 16.1.6.1'
  - 'big-ip_global_traffic_manager >= 16.1.0, < 16.1.6.1'
  - 'big-ip_link_controller >= 16.1.0, < 16.1.6.1'
  - 'big-ip_local_traffic_manager >= 16.1.0, < 16.1.6.1'
  - 'big-ip_policy_enforcement_manager >= 16.1.0, < 16.1.6.1'
  - 'big-ip_ssl_orchestrator >= 16.1.0, < 16.1.6.1'
  - 'big-ip_webaccelerator >= 16.1.0, < 16.1.6.1'
  - 'big-ip_websafe >= 16.1.0, < 16.1.6.1'
  - 'big-ip_access_policy_manager >= 17.1.0, < 17.1.3'
  - big-ip_access_policy_manager = 17.5.0
  - 'big-ip_advanced_firewall_manager >= 17.1.0, < 17.1.3'
  - big-ip_advanced_firewall_manager = 17.5.0
  - 'big-ip_advanced_web_application_firewall >= 17.1.0, < 17.1.3'
  - big-ip_advanced_web_application_firewall = 17.5.0
  - 'big-ip_analytics >= 17.1.0, < 17.1.3'
  - big-ip_analytics = 17.5.0
  - 'big-ip_application_acceleration_manager >= 17.1.0, < 17.1.3'
  - big-ip_application_acceleration_manager = 17.5.0
  - 'big-ip_application_security_manager >= 17.1.0, < 17.1.3'
  - big-ip_application_security_manager = 17.5.0
  - 'big-ip_application_visibility_and_reporting >= 17.1.0, < 17.1.3'
  - big-ip_application_visibility_and_reporting = 17.5.0
  - 'big-ip_automation_toolchain >= 17.1.0, < 17.1.3'
  - big-ip_automation_toolchain = 17.5.0
  - 'big-ip_carrier-grade_nat >= 17.1.0, < 17.1.3'
  - big-ip_carrier-grade_nat = 17.5.0
  - 'big-ip_container_ingress_services >= 17.1.0, < 17.1.3'
  - big-ip_container_ingress_services = 17.5.0
  - 'big-ip_ddos_hybrid_defender >= 17.1.0, < 17.1.3'
  - big-ip_ddos_hybrid_defender = 17.5.0
  - 'big-ip_domain_name_system >= 17.1.0, < 17.1.3'
  - big-ip_domain_name_system = 17.5.0
  - 'big-ip_edge_gateway >= 17.1.0, < 17.1.3'
  - big-ip_edge_gateway = 17.5.0
  - 'big-ip_fraud_protection_service >= 17.1.0, < 17.1.3'
  - big-ip_fraud_protection_service = 17.5.0
  - 'big-ip_global_traffic_manager >= 17.1.0, < 17.1.3'
  - big-ip_global_traffic_manager = 17.5.0
  - 'big-ip_link_controller >= 17.1.0, < 17.1.3'
  - big-ip_link_controller = 17.5.0
  - 'big-ip_local_traffic_manager >= 17.1.0, < 17.1.3'
  - big-ip_local_traffic_manager = 17.5.0
  - 'big-ip_policy_enforcement_manager >= 17.1.0, < 17.1.3'
  - big-ip_policy_enforcement_manager = 17.5.0
  - 'big-ip_ssl_orchestrator >= 17.1.0, < 17.1.3'
  - big-ip_ssl_orchestrator = 17.5.0
  - 'big-ip_webaccelerator >= 17.1.0, < 17.1.3'
  - big-ip_webaccelerator = 17.5.0
  - 'big-ip_websafe >= 17.1.0, < 17.1.3'
  - big-ip_websafe = 17.5.0
patched:
  - big-ip_access_policy_manager 17.1.3
  - big-ip_advanced_firewall_manager 17.1.3
  - big-ip_advanced_web_application_firewall 17.1.3
  - big-ip_analytics 17.1.3
  - big-ip_application_acceleration_manager 17.1.3
  - big-ip_application_security_manager 17.1.3
  - big-ip_application_visibility_and_reporting 17.1.3
  - big-ip_automation_toolchain 17.1.3
  - big-ip_carrier-grade_nat 17.1.3
  - big-ip_container_ingress_services 17.1.3
  - big-ip_ddos_hybrid_defender 17.1.3
  - big-ip_domain_name_system 17.1.3
  - big-ip_edge_gateway 17.1.3
  - big-ip_fraud_protection_service 17.1.3
  - big-ip_global_traffic_manager 17.1.3
  - big-ip_link_controller 17.1.3
  - big-ip_local_traffic_manager 17.1.3
  - big-ip_policy_enforcement_manager 17.1.3
  - big-ip_ssl_orchestrator 17.1.3
  - big-ip_webaccelerator 17.1.3
  - big-ip_websafe 17.1.3
published: '2025-10-15'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T12:10:00.217'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-61951'
references:
  - url: 'https://my.f5.com/manage/s/article/K000151309'
    label: f5sirt@f5.com
tags:
  - nvd
epss: 0.00238
epssPercentile: 0.13672
ingestedAt: '2026-10-08T11:31:27.436Z'
---

## Overview

Undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  This issue may occur when a Datagram Transport Layer Security (DTLS) 1.2 virtual server is enabled with a Server SSL profile that is configured with a certificate, key, and the SSL Sign Hash set to ANY, and the backend server is enabled with DTLS 1.2 and client authentication.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

## Affected

- `big-ip_access_policy_manager >= 16.1.0, < 16.1.6.1`
- `big-ip_advanced_firewall_manager >= 16.1.0, < 16.1.6.1`
- `big-ip_advanced_web_application_firewall >= 16.1.0, < 16.1.6.1`
- `big-ip_analytics >= 16.1.0, < 16.1.6.1`
- `big-ip_application_acceleration_manager >= 16.1.0, < 16.1.6.1`
- `big-ip_application_security_manager >= 16.1.0, < 16.1.6.1`
- `big-ip_application_visibility_and_reporting >= 16.1.0, < 16.1.6.1`
- `big-ip_automation_toolchain >= 16.1.0, < 16.1.6.1`
- `big-ip_carrier-grade_nat >= 16.1.0, < 16.1.6.1`
- `big-ip_container_ingress_services >= 16.1.0, < 16.1.6.1`
- `big-ip_ddos_hybrid_defender >= 16.1.0, < 16.1.6.1`
- `big-ip_domain_name_system >= 16.1.0, < 16.1.6.1`
- `big-ip_edge_gateway >= 16.1.0, < 16.1.6.1`
- `big-ip_fraud_protection_service >= 16.1.0, < 16.1.6.1`
- `big-ip_global_traffic_manager >= 16.1.0, < 16.1.6.1`
- `big-ip_link_controller >= 16.1.0, < 16.1.6.1`
- `big-ip_local_traffic_manager >= 16.1.0, < 16.1.6.1`
- `big-ip_policy_enforcement_manager >= 16.1.0, < 16.1.6.1`
- `big-ip_ssl_orchestrator >= 16.1.0, < 16.1.6.1`
- `big-ip_webaccelerator >= 16.1.0, < 16.1.6.1`
- `big-ip_websafe >= 16.1.0, < 16.1.6.1`
- `big-ip_access_policy_manager >= 17.1.0, < 17.1.3`
- `big-ip_access_policy_manager = 17.5.0`
- `big-ip_advanced_firewall_manager >= 17.1.0, < 17.1.3`
- `big-ip_advanced_firewall_manager = 17.5.0`
- `big-ip_advanced_web_application_firewall >= 17.1.0, < 17.1.3`
- `big-ip_advanced_web_application_firewall = 17.5.0`
- `big-ip_analytics >= 17.1.0, < 17.1.3`
- `big-ip_analytics = 17.5.0`
- `big-ip_application_acceleration_manager >= 17.1.0, < 17.1.3`
- `big-ip_application_acceleration_manager = 17.5.0`
- `big-ip_application_security_manager >= 17.1.0, < 17.1.3`
- `big-ip_application_security_manager = 17.5.0`
- `big-ip_application_visibility_and_reporting >= 17.1.0, < 17.1.3`
- `big-ip_application_visibility_and_reporting = 17.5.0`
- `big-ip_automation_toolchain >= 17.1.0, < 17.1.3`
- `big-ip_automation_toolchain = 17.5.0`
- `big-ip_carrier-grade_nat >= 17.1.0, < 17.1.3`
- `big-ip_carrier-grade_nat = 17.5.0`
- `big-ip_container_ingress_services >= 17.1.0, < 17.1.3`
- `big-ip_container_ingress_services = 17.5.0`
- `big-ip_ddos_hybrid_defender >= 17.1.0, < 17.1.3`
- `big-ip_ddos_hybrid_defender = 17.5.0`
- `big-ip_domain_name_system >= 17.1.0, < 17.1.3`
- `big-ip_domain_name_system = 17.5.0`
- `big-ip_edge_gateway >= 17.1.0, < 17.1.3`
- `big-ip_edge_gateway = 17.5.0`
- `big-ip_fraud_protection_service >= 17.1.0, < 17.1.3`
- `big-ip_fraud_protection_service = 17.5.0`
- `big-ip_global_traffic_manager >= 17.1.0, < 17.1.3`
- `big-ip_global_traffic_manager = 17.5.0`
- `big-ip_link_controller >= 17.1.0, < 17.1.3`
- `big-ip_link_controller = 17.5.0`
- `big-ip_local_traffic_manager >= 17.1.0, < 17.1.3`
- `big-ip_local_traffic_manager = 17.5.0`
- `big-ip_policy_enforcement_manager >= 17.1.0, < 17.1.3`
- `big-ip_policy_enforcement_manager = 17.5.0`
- `big-ip_ssl_orchestrator >= 17.1.0, < 17.1.3`
- `big-ip_ssl_orchestrator = 17.5.0`
- `big-ip_webaccelerator >= 17.1.0, < 17.1.3`
- `big-ip_webaccelerator = 17.5.0`
- `big-ip_websafe >= 17.1.0, < 17.1.3`
- `big-ip_websafe = 17.5.0`

## Remediation

Upgrade past the affected range:

- `big-ip_access_policy_manager 17.1.3`
- `big-ip_advanced_firewall_manager 17.1.3`
- `big-ip_advanced_web_application_firewall 17.1.3`
- `big-ip_analytics 17.1.3`
- `big-ip_application_acceleration_manager 17.1.3`
- `big-ip_application_security_manager 17.1.3`
- `big-ip_application_visibility_and_reporting 17.1.3`
- `big-ip_automation_toolchain 17.1.3`
- `big-ip_carrier-grade_nat 17.1.3`
- `big-ip_container_ingress_services 17.1.3`
- `big-ip_ddos_hybrid_defender 17.1.3`
- `big-ip_domain_name_system 17.1.3`
- `big-ip_edge_gateway 17.1.3`
- `big-ip_fraud_protection_service 17.1.3`
- `big-ip_global_traffic_manager 17.1.3`
- `big-ip_link_controller 17.1.3`
- `big-ip_local_traffic_manager 17.1.3`
- `big-ip_policy_enforcement_manager 17.1.3`
- `big-ip_ssl_orchestrator 17.1.3`
- `big-ip_webaccelerator 17.1.3`
- `big-ip_websafe 17.1.3`