NULL pointer dereference in Juniper Networks Junos OS

CVE-2026-101939

A NULL Pointer Dereference vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a configured peer sending a BGP UPDATE to cause a denial of service when an import policy with `then source-based-forwarding next-hop next-table <X>` is configured to reference a routing table that does not exist.

Published .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-101939?
CVE-2026-101939 is a high-severity vulnerability in Juniper Networks Junos OS, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-10-14.
How severe is CVE-2026-101939?
High severity. CVSS v3 base score is 7.5 out of 10.