CVE-2026-42409 | THREATINT

Description

When an HTTP/2 profile and an iRule containing the HTTP::redirect or HTTP::respond command are configured on a virtual server, undisclosed requests can cause 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-476 NULL Pointer Dereference

Product status

Default status

unknown

21.1.0 (custom) before *

unaffected

21.0.0 (custom) before 21.0.0.1

affected

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

Default status

unknown

2.0.0 (custom) before 2.0.3

affected

1.7.0 (custom) before 1.7.17

affected

Default status

unknown

2.0.0 (custom) before 2.0.3

affected

1.4.0 (custom) before 1.4.1

affected

Default status

unknown

2.0.0 (custom) before 2.1.1

affected

Credits

F5 finder

References

my.f5.com/manage/s/article/K000159034 vendor-advisory patch

cve.org (CVE-2026-42409)

nvd.nist.gov (CVE-2026-42409)

Download JSON