What is CVE-2016-1258?

CVE-2016-1258 is a medium-severity vulnerability in Juniper Junos, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2016-01-15.

How severe is CVE-2016-1258?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in Juniper Junos

CVE-2016-1258

Embedthis Appweb, as used in J-Web in Juniper Junos OS before 12.1X44-D60, 12.1X46 before 12.1X46-D45, 12.1X47 before 12.1X47-D30, 12.3 before 12.3R10, 12.3X48 before 12.3X48-D20, 13.2X51 before 13.2X51-D20, 13.3 before 13.3R8, 14.1 before 14.1R6, and 14.2 before 14.2R5, allows remote attackers to cause a denial of service (J-Web crash) via unspecified vectors.

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

Published 2016-01-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.017 (76.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Juniper Junos — versions 12.1x44, 12.1x46, 12.1x47

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securitytracker.com/id/1035116 (vdb-entry)
kb.juniper.net/InfoCenter/index (Vendor Advisory)

Frequently asked questions

What is CVE-2016-1258?: CVE-2016-1258 is a medium-severity vulnerability in Juniper Junos, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2016-01-15.
How severe is CVE-2016-1258?: Medium severity. CVSS v3 base score is 5.3 out of 10.