What is CVE-2018-0023?

CVE-2018-0023 is a medium-severity vulnerability in Juniper Jsnapy, classified under Incorrect Default Permissions. CVSS score: 5.5/10. Published 2018-04-11.

How severe is CVE-2018-0023?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Juniper Jsnapy

CVE-2018-0023

JSNAPy is an open source python version of Junos Snapshot Administrator developed by Juniper available through github. The default configuration and sample files of JSNAPy automation tool versions prior to 1.3.0 are created world writable. This insecure file and directory permission allows unprivileged local users to alter the files under this directory including inserting operations not intended by the package maintainer, system administrator, or other users. This issue only affects users who downloaded and installed JSNAPy from github.

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

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.7th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000

Affected products

Juniper Jsnapy
Juniper Networks Junos Snapshot Administrator (Jsnapy) — versions all

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

kb.juniper.net/JSA10856 (Mitigation, Vendor Advisory)
www.securityfocus.com/bid/103745 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-0023?: CVE-2018-0023 is a medium-severity vulnerability in Juniper Jsnapy, classified under Incorrect Default Permissions. CVSS score: 5.5/10. Published 2018-04-11.
How severe is CVE-2018-0023?: Medium severity. CVSS v3 base score is 5.5 out of 10.