CVE-2026-34019: BIG-IP BFD vulnerability
Vulnerability summary
CVE-2026-34019 is a medium (CVSS 6.3) Insufficient Resource Pool vulnerability in f5 big-ip. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 33.3% of scored vulnerabilities.
Timeline
- 13-05-2026PublishedVulnerability first disclosed.
- 13-05-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 2 sources · 2 versions- NVDNIST6.3MediumCVSS: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
- NVDNIST5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS trend
Probability
0.40%
Chance of exploitation in the next 30 days
Percentile
33%
Versus all other CVEs
30-day change
Increase +0.11 pp
From 0.29% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
F522 products
- big-ip≥ 17.5.0, < 17.5.1 | ≥ 17.1.0, < 17.1.3 | ≥ 16.1.0 (No fix recorded)
- big-ip_access_policy_manager≥ 17.1.0, ≤ 17.1.2 | 17.5.0 | ≥ 16.1.0, ≤ 16.1.6
- big-ip_advanced_firewall_manager≥ 17.1.0, ≤ 17.1.2 | 17.5.0 | ≥ 16.1.0, ≤ 16.1.6
- big-ip_advanced_web_application_firewall≥ 17.1.0, ≤ 17.1.2 | 17.5.0 | ≥ 16.1.0, ≤ 16.1.6
- big-ip_analytics≥ 17.1.0, ≤ 17.1.2 | 17.5.0 | ≥ 16.1.0, ≤ 16.1.6
1 vendor · 22 products