How severe is CVE-2017-14021?

CVE-2017-14021 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-14021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-14021?

CVE-2017-14021 primarily affects Korenix Jetnet5018g Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-14021?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-14021 published?

CVE-2017-14021 was published on 2017-11-01 and last updated on 2026-06-17.

CVE-2017-14021

CVE-2017-14021 is a critical-severity vulnerability in Korenix Jetnet5018g Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Korenix Jetnet5018g Firmware
Published: 2017-11-01
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2017-14021?: CVE-2017-14021 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-14021 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-14021?: CVE-2017-14021 primarily affects Korenix Jetnet5018g Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-14021?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-14021 published?: CVE-2017-14021 was published on 2017-11-01 and last updated on 2026-06-17.

References

Affected products (9)

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

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