CVE-2026-40618CWE-131

BIG-IP SSL/TLS vulnerability

High · published May 13, 2026

CVSS v4.0
8.7
EPSS
0%
Percentile
38.9
In the wild
Unconfirmed
What it is

When an SSL profile is configured on a virtual server on BIG-IP Virtual Edition (VE) without Intel QuickAssist Technology (QAT) or on BIG-IP hardware platforms with the database variable crypto.hwacceleration set to disabled, 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.

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:L
EPSS
0.00460 · 38.9th percentile
Weakness
CWE-131 · Incorrect Calculation of Buffer Size
Published
2026-05-13T14:12Z
EPSS history
Timeline
  • 13 MAY 14:12Z
    BIG-IP SSL/TLS vulnerability
    cvelistv5