cbcvebase.
CVE-2026-40423
published 2026-05-13

CVE-2026-40423: When a SIP profile is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software…

PriorityP342high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.26%
17.9th percentile
When a SIP profile is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected

88 ranges· showing 25
VendorProductVersion rangeFixed in
f5big-ip>= 16.1.0 < **
f5big-ip>= 17.1.0 < 17.1.3.217.1.3.2
f5big-ip>= 17.5.0 < 17.5.1.617.5.1.6
f5big-ip>= 21.0.0 < 21.0.0.221.0.0.2
f5big-ip_access_policy_manager——
f5big-ip_access_policy_manager16.1.0 – 16.1.6—
f5big-ip_access_policy_manager17.1.0 – 17.1.3—
f5big-ip_access_policy_manager17.5.0 – 17.5.1—
f5big-ip_advanced_firewall_manager——
f5big-ip_advanced_firewall_manager16.1.0 – 16.1.6—
f5big-ip_advanced_firewall_manager17.1.0 – 17.1.3—
f5big-ip_advanced_firewall_manager17.5.0 – 17.5.1—
f5big-ip_advanced_web_application_firewall——
f5big-ip_advanced_web_application_firewall16.1.0 – 16.1.6—
f5big-ip_advanced_web_application_firewall17.1.0 – 17.1.3—
f5big-ip_advanced_web_application_firewall17.5.0 – 17.5.1—
f5big-ip_analytics——
f5big-ip_analytics16.1.0 – 16.1.6—
f5big-ip_analytics17.1.0 – 17.1.3—
f5big-ip_analytics17.5.0 – 17.5.1—
f5big-ip_application_acceleration_manager——
f5big-ip_application_acceleration_manager16.1.0 – 16.1.6—
f5big-ip_application_acceleration_manager17.1.0 – 17.1.3—
f5big-ip_application_acceleration_manager17.5.0 – 17.5.1—
f5big-ip_application_security_manager——

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv4.08.7HIGHCVSS: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
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.