CVE-2026-34019
Last modified
CVE-2026-34019 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. 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 End of Technical Support (EoTS) are not evaluated.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
Description
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 End of Technical Support (EoTS) are not evaluated.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Access Policy Manager | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Access Policy Manager | 17.5.0 |
| F5 | Big-Ip Advanced Firewall Manager | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Advanced Firewall Manager | 17.5.0 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Advanced Web Application Firewall | 17.5.0 |
| F5 | Big-Ip Analytics | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Analytics | 17.5.0 |
| F5 | Big-Ip Application Acceleration Manager | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Application Acceleration Manager | 17.5.0 |
| F5 | Big-Ip Application Security Manager | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Application Security Manager | 17.5.0 |
| F5 | Big-Ip Application Visibility And Reporting | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Application Visibility And Reporting | 17.5.0 |
| F5 | Big-Ip Automation Toolchain | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Automation Toolchain | 17.5.0 |
| F5 | Big-Ip Carrier-Grade Nat | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Carrier-Grade Nat | 17.5.0 |
| F5 | Big-Ip Container Ingress Services | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Container Ingress Services | 17.5.0 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Ddos Hybrid Defender | 17.5.0 |
| F5 | Big-Ip Domain Name System | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Domain Name System | 17.5.0 |
| F5 | Big-Ip Edge Gateway | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Edge Gateway | 17.5.0 |
| F5 | Big-Ip Fraud Protection Service | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Fraud Protection Service | 17.5.0 |
| F5 | Big-Ip Global Traffic Manager | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Global Traffic Manager | 17.5.0 |
| F5 | Big-Ip Link Controller | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Link Controller | 17.5.0 |
| F5 | Big-Ip Local Traffic Manager | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Local Traffic Manager | 17.5.0 |
| F5 | Big-Ip Policy Enforcement Manager | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Policy Enforcement Manager | 17.5.0 |
| F5 | Big-Ip Ssl Orchestrator | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Ssl Orchestrator | 17.5.0 |
| F5 | Big-Ip Webaccelerator | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Webaccelerator | 17.5.0 |
| F5 | Big-Ip Websafe | >= 17.1.0, <= 17.1.2 |
| F5 | Big-Ip Websafe | 17.5.0 |
| F5 | Big-Ip Access Policy Manager | >= 16.1.0, <= 16.1.6 |
| F5 | Big-Ip Advanced Firewall Manager | >= 16.1.0, <= 16.1.6 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 16.1.0, <= 16.1.6 |
| F5 | Big-Ip Analytics | >= 16.1.0, <= 16.1.6 |
| F5 | Big-Ip Application Acceleration Manager | >= 16.1.0, <= 16.1.6 |
| F5 | Big-Ip Application Security Manager | >= 16.1.0, <= 16.1.6 |
| F5 | Big-Ip Application Visibility And Reporting | >= 16.1.0, <= 16.1.6 |
| F5 | Big-Ip Automation Toolchain | >= 16.1.0, <= 16.1.6 |
Showing 50 of 63 affected configurations. See NVD for the full list.
References
- https://my.f5.com/manage/s/article/K000150508Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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