What is CVE-2026-102063?

CVE-2026-102063 is a medium-severity vulnerability in Juniper Networks Junos OS, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2026-10-14.

How severe is CVE-2026-102063?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Juniper Networks Junos OS

CVE-2026-102063

A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos on MX Series routers allows an unauthenticated network attacker to cause a denial of service via an eBGP route update when HFRR link protection is configured in a VRF.

Published 2026-10-14 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/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

Juniper Networks Junos OS

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

supportportal.juniper.net/JSA112196 (vendor-advisory)

Frequently asked questions

What is CVE-2026-102063?: CVE-2026-102063 is a medium-severity vulnerability in Juniper Networks Junos OS, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2026-10-14.
How severe is CVE-2026-102063?: Medium severity. CVSS v3 base score is 6.5 out of 10.