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Description

On an HTTP/2 virtual server with Layer 7 DoS Protection configured, undisclosed traffic can result in an increase in memory consumption causing the Traffic Management Microkernel (TMM) process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

PUBLISHED Reserved 2026-04-30 | Published 2026-05-13 | Updated 2026-05-13 | Assigner f5




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-770 Allocation of Resources Without Limits or Throttling

Product status

Default status
unaffected

21.0.0 (custom) before *
unaffected

17.5.0 (custom) before 17.5.1.4
affected

17.1.0 (custom) before 17.1.3.1
affected

16.1.0 (custom) before *
affected

Credits

F5 finder

References

my.f5.com/manage/s/article/K000158979 vendor-advisory patch

cve.org (CVE-2026-41227)

nvd.nist.gov (CVE-2026-41227)

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