CVE-2026-34019

MediumCVSS 5.3

Published: 13/05/2026(UTC)Updated: 29/06/2026(UTC)Translated: 30/06/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.29%

21th percentile - higher than 21% of all known CVEs

Summary

A vulnerability in BFD (Bidirectional Forwarding Detection) configured in static and dynamic routing protocols causes undisclosed traffic to stop BFD packet processing by the Traffic Management Microkernel (TMM). This leads to a failover of the configured routing protocol.

Risk Assessment

The risk involves disruption of routing protocol continuity, potentially causing unplanned failover and loss of network service availability.

Recommendation

It is recommended to update the software to a version containing the fix for CVE-2026-34019 and monitor vendor communications for patch details.

Original NVD description (English source)

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.