CVE-2026-42409

Summary

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.

Affected Software

VendorProductVersion RangeStatus
F5BIG-IP21.1.0 < *unaffected
F5BIG-IP21.0.0 < 21.0.0.1affected
F5BIG-IP17.5.0 < 17.5.1.4affected
F5BIG-IP17.1.0 < 17.1.3.1affected
F5BIG-IP16.1.0 < *affected
F5BIG-IP Next SPK2.0.0 < 2.0.3affected
F5BIG-IP Next SPK1.7.0 < 1.7.17affected
F5BIG-IP Next CNF2.0.0 < 2.0.3affected
F5BIG-IP Next CNF1.4.0 < 1.4.1affected
F5BIG-IP Next for Kubernetes2.0.0 < 2.1.1affected

Weaknesses

  • CWE-476: CWE-476 NULL Pointer Dereference

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References