BIG-IP
CVE-2026-40618: BIG-IP SSL/TLS vulnerability
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.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| BIG-IP 21.1 | Not affected |
| BIG-IP 21.0 | 21.0.0.1 or later |
| BIG-IP 17.5 | 17.1.5.4 or later |
| BIG-IP 17.1 | 17.1.3.1 or later |
| BIG-IP 16.1 | * or later |
| BIG-IP Next SPK 2.0 | * or later |
| BIG-IP Next SPK 1.7 | * or later |
| BIG-IP Next CNF 2.0 | * or later |
| BIG-IP Next CNF 1.1 | * or later |
| BIG-IP Next for Kubernetes 2.0 | 2.2.0 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 12 Oct 2026.