CVE-2018-5314

Command injection vulnerability in Citrix NetScaler ADC and NetScaler Gateway 11.0 before build 70.16, 11.1 before build 55.13, and 12.0 before build 53.13; and the NetScaler Load Balancing instance distributed with NetScaler SD-WAN/CloudBridge 4000, 4100, 5000 and 5100 WAN Optimization Edition 9.3.0 allows remote attackers to execute a system command or read arbitrary files via an SSH login prompt.

Published: 2018-03-01 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-5314 is rated Moderate Risk (59.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.85%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-5314

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-07-08 2.91% 2.85% -0.06%
2 2026-06-15 3.31% 2.91% -0.40%
3 2025-09-15 — 3.31% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-5314

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2018-5314

Affected software / configurations for CVE-2018-5314

Vendor Product Version Raw CPE
citrix netscaler_application_delivery_controller 11.0 cpe:2.3:a:citrix:netscaler_application_delivery_controller:11.0:*:*:*:*:*:*:*
citrix netscaler_application_delivery_controller 11.1 cpe:2.3:a:citrix:netscaler_application_delivery_controller:11.1:*:*:*:*:*:*:*
citrix netscaler_application_delivery_controller 12.0 cpe:2.3:a:citrix:netscaler_application_delivery_controller:12.0:*:*:*:*:*:*:*
citrix netscaler_gateway 11.0 cpe:2.3:a:citrix:netscaler_gateway:11.0:*:*:*:*:*:*:*
citrix netscaler_gateway 11.1 cpe:2.3:a:citrix:netscaler_gateway:11.1:*:*:*:*:*:*:*
citrix netscaler_gateway 12.0 cpe:2.3:a:citrix:netscaler_gateway:12.0:*:*:*:*:*:*:*
citrix netscaler_sd-wan 9.3.0 cpe:2.3:a:citrix:netscaler_sd-wan:9.3.0:*:*:*:wan_optimization:*:*:*

References for CVE-2018-5314

URL Tags
http://www.securityfocus.com/bid/103186 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040439 Third Party Advisory VDB Entry
https://support.citrix.com/article/CTX232199 Vendor Advisory
cvelogic Threat Intelligence