CVE-2025-61951

HIGH

F5 Big-ip Access Policy Manager < 16.1.6.1 - Out-of-Bounds Read

Title source: rule

Description

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.

References (1)

[Vendor Advisory] https://my.f5.com/manage/s/article/K000151309

Scores

CVSS v3 7.5

EPSS 0.0008

EPSS Percentile 22.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-125

Status published

Affected Products (42)

f5/big-ip_access_policy_manager < 16.1.6.1

f5/big-ip_advanced_firewall_manager < 16.1.6.1

f5/big-ip_advanced_web_application_firewall < 16.1.6.1

f5/big-ip_analytics < 16.1.6.1

f5/big-ip_application_acceleration_manager < 16.1.6.1

f5/big-ip_application_security_manager < 16.1.6.1

f5/big-ip_application_visibility_and_reporting < 16.1.6.1

f5/big-ip_automation_toolchain < 16.1.6.1

f5/big-ip_carrier-grade_nat < 16.1.6.1

f5/big-ip_container_ingress_services < 16.1.6.1

f5/big-ip_ddos_hybrid_defender < 16.1.6.1

f5/big-ip_domain_name_system < 16.1.6.1

f5/big-ip_edge_gateway < 16.1.6.1

f5/big-ip_fraud_protection_service < 16.1.6.1

f5/big-ip_global_traffic_manager < 16.1.6.1

... and 27 more

Timeline

Published Oct 15, 2025

Tracked Since Feb 18, 2026