CVE-2026-42409

published 2026-05-13

CVE-2026-42409: 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…

high 8.7 CVSS 4.0

AV N AC L AT N PR N UI N VC N VI N VA H SC N SI N SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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

9 ranges

Vendor	Product	Version range	Fixed in
f5	big-ip	>= 16.1.0 < *	*
f5	big-ip	>= 17.1.0 < 17.1.3.1	17.1.3.1
f5	big-ip	>= 17.5.0 < 17.5.1.4	17.5.1.4
f5	big-ip	>= 21.0.0 < 21.0.0.1	21.0.0.1
f5	big-ip_next_cnf	>= 1.4.0 < 1.4.1	1.4.1
f5	big-ip_next_cnf	>= 2.0.0 < 2.0.3	2.0.3
f5	big-ip_next_for_kubernetes	>= 2.0.0 < 2.1.1	2.1.1
f5	big-ip_next_spk	>= 1.7.0 < 1.7.17	1.7.17
f5	big-ip_next_spk	>= 2.0.0 < 2.0.3	2.0.3

CWE-476