CVE-2026-102029: Juniper Networks Junos OS NULL pointer dereference in rpd

CVE-2026-102029 · Severity: high · CVSS 7.5 · Published 2026-10-14

Juniper's routing protocol daemon (rpd) in Junos OS and Junos OS Evolved contains a flaw that can be triggered by misconfigured MSDP or PIM peers to crash the routing system. An attacker with access to send multicast routing packets can cause a denial of service, disrupting network routing and traffic flow.

Technologies: Juniper Networks Junos OS, Juniper Networks Junos OS Evolved. Vendors: Juniper Networks.

Quick answers

Is CVE-2026-102029 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-102029 being exploited in the wild.
How severe is CVE-2026-102029?
High severity, with a CVSS score of 7.5, published 14 October 2026.
Which products and versions are affected?
Juniper Networks Junos OS; Juniper Networks Junos OS Evolved.
Is there a fix for CVE-2026-102029?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-102029 attacked?
It is attacked over the network or from the adjacent network, in an operating system.
Am I affected by CVE-2026-102029?
Check whether you run Juniper Networks Junos OS or Juniper Networks Junos OS Evolved. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A NULL pointer dereference vulnerability in the routing protocol daemon (rpd) can be triggered via MSDP or PIM policy configuration that uses AS-path expansion. An unauthenticated configured MSDP peer or adjacent PIM sender can send crafted packets to cause the daemon to crash, resulting in a denial of service. The attack requires network-adjacent or configured peer relationship.

Affected products

  • Juniper Networks Junos OS
  • Juniper Networks Junos OS Evolved

Timeline

  • 2026-10-14: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.