vulnerability

F5: CVE-2021-23009: K90603426: TMM with HTTP/2 vulnerability (CVE-2021-23009)

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Severity

CVSS

(AV:N/AC:L/Au:N/C:N/I:N/A:P)

Published

Apr 28, 2021

Added

Jun 17, 2026

Modified

Jun 17, 2026

Description

Malformed HTTP/2 requests may cause an infinite loop which causes a Denial of Service for Data Plane traffic. TMM takes the configured HA action when the TMM process is aborted. There is no control plane exposure, this is a data plane issue only.(

Solution

f5-bigip-upgrade-latest

References

CVE-2021-23009
https://attackerkb.com/topics/CVE-2021-23009
https://my.f5.com/manage/s/article/K90603426
https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-10127
CWE-835
EUVD-EUVD-2021-10127

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