What is CVE-2018-0017?

CVE-2018-0017 is a high-severity vulnerability in Juniper Junos, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2018-04-11.

How severe is CVE-2018-0017?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Juniper Junos

CVE-2018-0017

A vulnerability in the Network Address Translation - Protocol Translation (NAT-PT) feature of Junos OS on SRX series devices may allow a certain valid IPv6 packet to crash the flowd daemon. Repeated crashes of the flowd daemon can result in an extended denial of service condition for the SRX device. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D72; 12.3X48 versions prior to 12.3X48-D55; 15.1X49 versions prior to 15.1X49-D90.

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

Published 2018-04-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.019 (78.4th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: -0.000

Affected products

Juniper Junos
Juniper Networks Junos OS — versions 12.1X46, 12.3X48, 15.1X49

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

kb.juniper.net/JSA10845 (Vendor Advisory)
www.securityfocus.com/bid/103749 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1040785 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-0017?: CVE-2018-0017 is a high-severity vulnerability in Juniper Junos, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2018-04-11.
How severe is CVE-2018-0017?: High severity. CVSS v3 base score is 7.5 out of 10.