CVE-2026-101960 Juniper Networks CVE debrief

Who should care

Network administrators and security teams responsible for Juniper Networks Junos OS Evolved on QFX Series devices, especially those configured for BGP global-load-balancing, should assess exposure and prioritize remediation.

Why it matters

CVE-2026-101960 is a medium-severity vulnerability in Juniper Networks Junos OS Evolved on QFX Series devices. An attacker could cause an rpd crash when global load balancing is enabled. Defenders should verify and apply vendor remediation, conduct inventory checks, and monitor network logs.

• Network stability and availability may be impacted due to potential rpd crashes
• Verification of vendor remediation and affected versions is necessary
• Inventory checks are required to identify and prioritize QFX Series devices configured for BGP global-load-balancing
• Monitoring network logs for potential exploitation attempts is recommended

Technical summary

An Out-of-bounds Write vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS Evolved on QFX5240, QFX5241, and QFX5250 configured for BGP global-load-balancing and more than 128 ecmp next-hops allows an attacker to cause an rpd crash. The vulnerability can be mitigated by verifying and applying vendor remediation, conducting inventory checks, and monitoring network logs. Defenders should prioritize verifying and applying vendor remediation for Juniper Networks Junos OS Evolved on QFX Series devices, especially those configured for BGP global-load-balancing.

Defensive priority

Network administrators and security teams should prioritize verifying and applying vendor remediation for Juniper Networks Junos OS Evolved on QFX Series devices, especially those configured for BGP global-load-balancing.

Recommended defensive actions

• Verify and apply Juniper Networks' official remediation for the vulnerability
• Conduct an inventory check to identify and prioritize QFX Series devices configured for BGP global-load-balancing
• Monitor network logs for potential exploitation attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the Out-of-bounds Write vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS Evolved on QFX5240, QFX5241, and QFX5250 configured for BGP global-load-balancing.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.