Dashboard / CVE-2026-42409

CVE-2026-42409

HIGH
MEDIUM Priority: 0.02 BB Relevance: 77/100
Published: 2026-05-13 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: None
VI: None
VA: High

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.

Weakness Classification (1)

Affected Software (44)

VendorProductVersion
f5 big-ip_access_policy_manager 21.0.0
f5 big-ip_access_policy_manager 16.1.0 – 16.1.6
f5 big-ip_advanced_firewall_manager 21.0.0
f5 big-ip_advanced_firewall_manager 16.1.0 – 16.1.6
f5 big-ip_advanced_web_application_firewall 21.0.0
f5 big-ip_advanced_web_application_firewall 16.1.0 – 16.1.6
f5 big-ip_analytics 21.0.0
f5 big-ip_analytics 16.1.0 – 16.1.6
f5 big-ip_application_acceleration_manager 21.0.0
f5 big-ip_application_acceleration_manager 16.1.0 – 16.1.6
f5 big-ip_application_security_manager 21.0.0
f5 big-ip_application_security_manager 16.1.0 – 16.1.6
f5 big-ip_application_visibility_and_reporting 21.0.0
f5 big-ip_application_visibility_and_reporting 16.1.0 – 16.1.6
f5 big-ip_automation_toolchain 21.0.0
f5 big-ip_automation_toolchain 16.1.0 – 16.1.6
f5 big-ip_carrier-grade_nat 21.0.0
f5 big-ip_carrier-grade_nat 16.1.0 – 16.1.6
f5 big-ip_container_ingress_services 21.0.0
f5 big-ip_container_ingress_services 16.1.0 – 16.1.6
f5 big-ip_ddos_hybrid_defender 21.0.0
f5 big-ip_ddos_hybrid_defender 16.1.0 – 16.1.6
f5 big-ip_domain_name_system 21.0.0
f5 big-ip_domain_name_system 16.1.0 – 16.1.6
f5 big-ip_edge_gateway 21.0.0
f5 big-ip_edge_gateway 16.1.0 – 16.1.6
f5 big-ip_fraud_protection_service 21.0.0
f5 big-ip_fraud_protection_service 16.1.0 – 16.1.6
f5 big-ip_global_traffic_manager 21.0.0
f5 big-ip_global_traffic_manager 16.1.0 – 16.1.6
Showing 30 of 44 entries

References & Advisories (1)

Bug Bounty Relevance

77 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.26%
Raw Score 0.002630
Percentile 18.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00263
2026-10-28
0.00263

Intelligence Sources

nvd ref →

External Links