What is CVE-2018-0005?

CVE-2018-0005 is a high-severity vulnerability in Juniper Ex2200, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 7.4/10. Published 2018-01-10.

How severe is CVE-2018-0005?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Juniper Ex2200

CVE-2018-0005

QFX and EX Series switches configured to drop traffic when the MAC move limit is exceeded will forward traffic instead of dropping traffic. This can lead to denials of services or other unintended conditions. Affected releases are Juniper Networks Junos OS: 14.1X53 versions prior to 14.1X53-D40; 15.1X53 versions prior to 15.1X53-D55; 15.1 versions prior to 15.1R7.

Published 2018-01-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (53.9th percentile), scored 2026-11-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

kb.juniper.net/JSA10833 (Mitigation, Vendor Advisory)
www.securitytracker.com/id/1040182 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-0005?: CVE-2018-0005 is a high-severity vulnerability in Juniper Ex2200, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 7.4/10. Published 2018-01-10.
How severe is CVE-2018-0005?: High severity. CVSS v3 base score is 7.4 out of 10.