Improper input validation in Juniper Networks Junos OS

CVE-2026-101943

An Improper Input Validation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a denial of service via a crafted BGP EVPN update message.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

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-2026-101943?
CVE-2026-101943 is a high-severity vulnerability in Juniper Networks Junos OS, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-10-14.
How severe is CVE-2026-101943?
High severity. CVSS v3 base score is 7.5 out of 10.