CVE-2017-14021

A Use of Hard-coded Cryptographic Key issue was discovered in Korenix JetNet JetNet5018G version 1.4, JetNet5310G version 1.4a, JetNet5428G-2G-2FX version 1.4, JetNet5628G-R version 1.4, JetNet5628G version 1.4, JetNet5728G-24P version 1.4, JetNet5828G version 1.1d, JetNet6710G-HVDC version 1.1e, and JetNet6710G version 1.1. An attacker may gain access to hard-coded certificates and private keys allowing the attacker to perform man-in-the-middle attacks.

Published: 2017-11-01 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-14021 is rated Moderate Risk (52.8/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.18%). 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-2017-14021

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 2026-06-03 0.08% 0.18% +0.09%
2 2025-03-30 0.22% 0.08% -0.14%
3 2025-03-29 — 0.22% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-14021

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2017-14021

Affected software / configurations for CVE-2017-14021

Vendor Product Version Raw CPE
korenix jetnet5018g_firmware 1.4 cpe:2.3:o:korenix:jetnet5018g_firmware:1.4:*:*:*:*:*:*:*
korenix jetnet5310g_firmware 1.4a cpe:2.3:o:korenix:jetnet5310g_firmware:1.4a:*:*:*:*:*:*:*
korenix jetnet5428g-2g-2fx_firmware 1.4 cpe:2.3:o:korenix:jetnet5428g-2g-2fx_firmware:1.4:*:*:*:*:*:*:*
korenix jetnet5628g_firmware 1.4 cpe:2.3:o:korenix:jetnet5628g_firmware:1.4:*:*:*:*:*:*:*
korenix jetnet5628g-r_firmware 1.4 cpe:2.3:h:korenix:jetnet5628g-r_firmware:1.4:*:*:*:*:*:*:*
korenix jetnet5728g-24p_firmware 1.4 cpe:2.3:h:korenix:jetnet5728g-24p_firmware:1.4:*:*:*:*:*:*:*
korenix jetnet5828g_firmware 1.1d cpe:2.3:h:korenix:jetnet5828g_firmware:1.1d:*:*:*:*:*:*:*
korenix jetnet6710g_firmware 1.1 cpe:2.3:o:korenix:jetnet6710g_firmware:1.1:*:*:*:*:*:*:*
korenix jetnet6710g-hvdc_firmware 11e cpe:2.3:o:korenix:jetnet6710g-hvdc_firmware:11e:*:*:*:*:*:*:*

References for CVE-2017-14021

URL Tags
http://www.securityfocus.com/bid/101598 Third Party Advisory VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-17-299-01 Third Party Advisory US Government Resource
cvelogic Threat Intelligence