What is CVE-2018-6186?

CVE-2018-6186 is a high-severity vulnerability in Citrix Netscaler, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.8/10. Published 2018-02-01.

How severe is CVE-2018-6186?

High severity. CVSS v3 base score is 8.8 out of 10.

SSRF in Citrix Netscaler

CVE-2018-6186

Citrix NetScaler VPX through NS12.0 53.13.nc allows an SSRF attack via the /rapi/read_url URI by an authenticated attacker who has a webapp account. The attacker can gain access to the nsroot account, and execute remote commands with root privileges.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2018-02-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.031 (87.6th percentile), scored 2026-10-23.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000

Affected products

Citrix Netscaler — versions 12.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

gist.github.com/buxu/04ce809eb8b32ef57e232eab5e61f023 (Third Party Advisory)
support.citrix.com/article/CTX232161
www.securitytracker.com/id/1040440 (vdb-entry)
www.securityfocus.com/bid/102915 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-6186?: CVE-2018-6186 is a high-severity vulnerability in Citrix Netscaler, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.8/10. Published 2018-02-01.
How severe is CVE-2018-6186?: High severity. CVSS v3 base score is 8.8 out of 10.