CVE-2026-41227

On an HTTP/2 virtual server with Layer 7 DoS Protection configured, undisclosed traffic can result in an increase in memory consumption causing the Traffic Management Microkernel TMM process to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-40618

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...

CVE-2026-39458

When a BIG-IP is configured with DNS caching Such as a DNS profile with caching enabled, SSL Orchestrator, Advanced WAF DoS protection, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are n...

CVE-2026-34019

When Bidirectional Forwarding Detection BFD is configured in Static and Dynamic routing protocols, undisclosed traffic can cause the Traffic Management Microkernel TMM to stop processing BFD packets and cause the configured routing protocol to fail over. Note: Software versions which have reached...

CVE-2026-40423

CVE-2026-40423 affects BIG-IP SIP profile on a virtual server. Undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate, disrupting traffic and allowing a remote, unauthenticated attacker to trigger a DoS. Impact is shown as HIGH (CVSS v3.1: 7.5) and HIGH (CVSS v4.0: 8....

CVE-2026-40423 BIG-IP SIP profile vulnerability

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...

CVE-2026-39458 BIG-IP DNS Cache vulnerability

When a BIG-IP is configured with DNS caching Such as a DNS profile with caching enabled, SSL Orchestrator, Advanced WAF DoS protection, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are n...

CVE-2026-42409

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...

CVE-2026-41227 BIG-IP HTTP/2 Layer 7 Dos Protection vulnerability

On an HTTP/2 virtual server with Layer 7 DoS Protection configured, undisclosed traffic can result in an increase in memory consumption causing the Traffic Management Microkernel TMM process to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-41956 BIG-IP TMM Vulnerability

When a classification profile is configured on a UDP virtual server, undisclosed requests can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-41956 BIG-IP TMM Vulnerability

When a classification profile is configured on a UDP virtual server, undisclosed requests can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-42920 BIG-IP DTLS Vulnerability

When a Client SSL profile is configured with Allow Dynamic Record Sizing on a UDP 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...

CVE-2026-42920

When a Client SSL profile is configured with Allow Dynamic Record Sizing on a UDP 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...

CVE-2026-41956

CVE-2026-41956 affects BIG-IP TMM. When a classification profile is configured on a UDP virtual server, undisclosed requests can cause TMM termination, producing DoS on the BIG-IP data plane. From F5 advisories, vulnerable lines include BIG-IP (all modules) UDP virtual servers across 17.x and 21....

CVE-2026-42920

CVE-2026-42920 affects BIG-IP DTLS: when a Client SSL profile has Allow Dynamic Record Sizing on a UDP virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate, resulting in a DoS as TMM restarts. The F5 advisory notes this is a data-plane issue with rem...

CVE-2026-42781 BIG-IP FastL4 virtual server vulnerability

When embedded Packet Velocity Acceleration ePVA acceleration is configured, undisclosed local ethernet traffic can cause an increase in ePVA and Traffic Management Microkernel TMM resource utilization. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-34019 BIG-IP BFD vulnerability

When Bidirectional Forwarding Detection BFD is configured in Static and Dynamic routing protocols, undisclosed traffic can cause the Traffic Management Microkernel TMM to stop processing BFD packets and cause the configured routing protocol to fail over. Note: Software versions which have reached...

CVE-2026-34019 BIG-IP BFD vulnerability

When Bidirectional Forwarding Detection BFD is configured in Static and Dynamic routing protocols, undisclosed traffic can cause the Traffic Management Microkernel TMM to stop processing BFD packets and cause the configured routing protocol to fail over. Note: Software versions which have reached...

CVE-2026-34019

CVE-2026-34019 affects F5 BIG-IP when BFD is enabled with Static/Dynamic routing; crafted traffic can cause TMM to stop processing BFD and trigger routing protocol failover. Impact: DoS to the configured routing protocol (data plane issue). Remediation per F5 advisory K000150508: disclose vulnera...

K000160901: BIG-IP DTLS vulnerability CVE-2026-42920

Security Advisory Description When a Client SSL profile is configured with Allow Dynamic Record Sizing on a UDP virtual server, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. CVE-2026-42920 Impact Traffic is disrupted while the TMM process restarts. This...