CVE-2020-5852

HIGH

F5 BIG-IP - Denial of Service in Traffic Management Microkernel via FastL4 Profile

Title source: llm
STIX 2.1

Description

Undisclosed traffic patterns received may cause a disruption of service to the Traffic Management Microkernel (TMM). This vulnerability affects TMM through a virtual server configured with a FastL4 profile. Traffic processing is disrupted while TMM restarts. This issue only impacts specific engineering hotfixes. NOTE: This vulnerability does not affect any of the BIG-IP major, minor or maintenance releases you obtained from downloads.f5.com. The affected Engineering Hotfix builds are as follows: Hotfix-BIGIP-14.1.2.1.0.83.4-ENG Hotfix-BIGIP-12.1.4.1.0.97.6-ENG Hotfix-BIGIP-11.5.4.2.74.291-HF2

References (1)

Core 1
Core References
Vendor Advisory x_refsource_confirm
https://support.f5.com/csp/article/K53590702

Scores

CVSS v3 7.5
EPSS 0.0090
EPSS Percentile 75.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (39)
f5/big-ip_access_policy_manager 11.5.4.2.74.291
f5/big-ip_access_policy_manager 12.1.4.1.0.97.6
f5/big-ip_access_policy_manager 14.1.2.1.0.83.4
f5/big-ip_advanced_firewall_manager 11.5.4.2.74.291
f5/big-ip_advanced_firewall_manager 12.1.4.1.0.97.6
f5/big-ip_advanced_firewall_manager 14.1.2.1.0.83.4
f5/big-ip_analytics 11.5.4.2.74.291
f5/big-ip_analytics 12.1.4.1.0.97.6
f5/big-ip_analytics 14.1.2.1.0.83.4
f5/big-ip_application_acceleration_manager 11.5.4.2.74.291
... and 29 more
Published Jan 14, 2020
Tracked Since Feb 18, 2026