CVE-2026-40067CWE-120

BIG-IP APM Vulnerability

High · published May 13, 2026

CVSS v4.0

8.7

EPSS

Percentile

38.9

In the wild

Unconfirmed

What it is

When a BIG-IP APM access policy is configured on a virtual server, undisclosed traffic can cause the apmd process to terminate.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

The record

Technical detail

CVSS v4.0: 8.7 · HIGH
Vector: 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
EPSS: 0.00460 · 38.9th percentile
Weakness: CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published: 2026-05-13T14:12Z

EPSS history

Timeline