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-2026-42409 BIG-IP HTTP/2 vulnerability

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-2026-40618

CVE-2026-40618 affects BIG-IP SSL/TLS when an SSL profile is on a virtual server and either QAT is not available (VE) or crypto.hwacceleration is disabled on hardware. This can cause TMM to terminate, resulting in a data-plane DoS with traffic disruption as TMM restarts. Affected BIG-IP lines inc...

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-2026-41218 BIG-IP PEM iRules vulnerability

When BIG-IP PEM iRules are configured on a virtual server iRules using commands starting with CLASSIFICATION::, CLASSIFY::, PEM::, PSC::, and the urlcatquery command, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End...

CVE-2026-42781

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-2026-42781

The CVE-2026-42781 issue affects BIG-IP with embedded ePVA acceleration enabled. A local network attacker can cause the ePVA/TMM to escalate resource utilization, degrading system performance and potentially causing DoS on vulnerable rSeries/VELOS deployments that support ePVA. That impact is a d...

K000158082: BIG-IP SSL vulnerability CVE-2026-40618

Security Advisory Description 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...

K000159034: BIG-IP HTTP/2 vulnerability CVE-2026-42409

Security Advisory Description 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. CVE-2026-42409 Impact Traffic is disrupted while...

K000158038: BIG-IP TMM vulnerability CVE-2026-41956

Security Advisory Description When a classification profile is configured on a UDP virtual server, undisclosed requests can cause the Traffic Management Microkernel TMM to terminate. CVE-2026-41956 Impact Traffic is disrupted while the TMM process restarts. This vulnerability allows a remote,...

K000160875: BIG-IP PEM iRules vulnerability CVE-2026-41218

Security Advisory Description When BIG-IP PEM iRules are configured on a virtual server iRules using commands starting with CLASSIFICATION:: , CLASSIFY::, PEM:: , PSC:: , and the urlcatquery command, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. CVE-2026-41218...

K000158979: BIG-IP HTTP/2 Layer 7 DoS Protection vulnerability CVE-2026-41227

Security Advisory Description 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. CVE-2026-41227 Impact Traffic is disrupted while the TMM proce...

PT-2026-40661

Name of the Vulnerable Software and Affected Versions F5 BIG-IP versions prior to 17.1.3.1 F5 BIG-IP versions prior to 17.5.1.4 Description On an HTTP/2 virtual server with Layer 7 DoS Protection configured, undisclosed traffic can lead to excessive resource allocation and increased memory...

PT-2026-40675

Name of the Vulnerable Software and Affected Versions F5 BIG-IP versions prior to 17.1.3.1 F5 BIG-IP versions prior to 17.5.1.4 F5 BIG-IP versions prior to 21.0.0.1 Description When a Client SSL profile is configured with Allow Dynamic Record Sizing on a UDP virtual server, undisclosed traffic ca...

CVE-2026-42920: Loop with Unreachable Exit Condition

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-2026-39458: Access of Uninitialized Pointer

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-2026-40423: Allocation of Resources Without Limits or Throttling

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...

F5 BIG-IP 代码问题漏洞

F5 BIG-IP is an application delivery platform developed by F5 Corporation in the United States. It integrates functions such as network traffic management, application security management, and load balancing. There is a code vulnerability in F5 BIG-IP. This vulnerability arises when configuring...

PT-2026-40650

Name of the Vulnerable Software and Affected Versions BIG-IP Virtual Edition VE affected versions not specified BIG-IP hardware platforms affected versions not specified Description Undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate when an SSL profile is configured...

PT-2026-40658

Name of the Vulnerable Software and Affected Versions F5 BIG-IP versions prior to 17.1.3.1 F5 BIG-IP versions prior to 17.5.1.4 F5 BIG-IP versions prior to 21.0.0.1 Description Undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate when PEM iRules are configured on a...