CVE-2023-40534

HIGH

F5 < EoTS - DoS

Title source: llm

Description

When a client-side HTTP/2 profile and the HTTP MRF Router option are enabled for a virtual server, and an iRule using the HTTP_REQUEST event or Local Traffic Policy are associated with the virtual server, undisclosed requests can cause TMM to terminate. 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/K000133467

Scores

CVSS v3 7.5

EPSS 0.0057

EPSS Percentile 68.3%

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-401

Status published

Affected Products (39)

f5/big-ip_access_policy_manager < 16.1.4.1

f5/big-ip_access_policy_manager

f5/big-ip_advanced_firewall_manager < 16.1.4.1

f5/big-ip_advanced_firewall_manager

f5/big-ip_advanced_web_application_firewall < 16.1.4.1

f5/big-ip_advanced_web_application_firewall

f5/big-ip_analytics < 16.1.4.1

f5/big-ip_analytics

f5/big-ip_application_acceleration_manager < 16.1.4.1

f5/big-ip_application_acceleration_manager

f5/big-ip_application_security_manager < 16.1.4.1

f5/big-ip_application_security_manager

f5/big-ip_application_visibility_and_reporting < 16.1.4.1

f5/big-ip_application_visibility_and_reporting

f5/big-ip_carrier-grade_nat < 16.1.4.1

... and 24 more

Timeline

Published Oct 10, 2023

Tracked Since Feb 18, 2026