Back to CVE records
High 7.5Published May 13, 2026
CVE-2026-42920When 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.
Updated under an hour ago ()
Does this affect you?
It affects f5 big-ip_access_policy_manager and 20 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Start free and add your stack
Free account, 1 product
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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-835
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
f5 big-ip_access_policy_manager f5:big-ip_access_policy_manager | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_advanced_firewall_manager f5:big-ip_advanced_firewall_manager | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_advanced_web_application_firewall f5:big-ip_advanced_web_application_firewall | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_analytics f5:big-ip_analytics | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_application_acceleration_manager f5:big-ip_application_acceleration_manager | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_application_security_manager f5:big-ip_application_security_manager | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_application_visibility_and_reporting f5:big-ip_application_visibility_and_reporting | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_automation_toolchain f5:big-ip_automation_toolchain | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_carrier-grade_nat f5:big-ip_carrier-grade_nat | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_container_ingress_services f5:big-ip_container_ingress_services | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_ddos_hybrid_defender f5:big-ip_ddos_hybrid_defender | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_domain_name_system f5:big-ip_domain_name_system | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_edge_gateway f5:big-ip_edge_gateway | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_fraud_protection_service f5:big-ip_fraud_protection_service | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_global_traffic_manager f5:big-ip_global_traffic_manager | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_link_controller f5:big-ip_link_controller | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_local_traffic_manager f5:big-ip_local_traffic_manager | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_policy_enforcement_manager f5:big-ip_policy_enforcement_manager | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_ssl_orchestrator f5:big-ip_ssl_orchestrator | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_webaccelerator f5:big-ip_webaccelerator | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
f5 big-ip_websafe f5:big-ip_websafe | 21.0.0; from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 16.1.0 through 16.1.6 | NVD |
References
- https://my.f5.com/manage/s/article/K000160901mitigation, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.