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CVE-2020-5852

Undisclosed traffic patterns received may cause a disruption of service to the Traffic Management Microkernel (TMM). This vulnerability…

High7.5EPSS 1.3%
Published
Updated
Reserved
Assigned by
f5

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

Scores

CVSS scores of CVE-2020-5852, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
1.3% · top 29% of all CVEs (6 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

  • DoS

Affected products

  • F5 · BIG-IP

    • affected Hotfix-BIGIP-14.1.2.1.0.83.4-ENG
    • affected Hotfix-BIGIP-12.1.4.1.0.97.6-ENG
    • affected Hotfix-BIGIP-11.5.4.2.74.291-HF2

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .