How severe is CVE-2018-14893?

CVE-2018-14893 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-14893 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-14893?

CVE-2018-14893 affects Zyxel Nsa325 V2 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-14893?

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

When was CVE-2018-14893 published?

CVE-2018-14893 was published on 2018-11-27 and last updated on 2026-06-17.

CVE-2018-14893

CVE-2018-14893 is a high-severity vulnerability in Zyxel Nsa325 V2 Firmware with a CVSS 3.x base score of 8.8. 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-77.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 3% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Zyxel Nsa325 V2 Firmware
Published: 2018-11-27
Last modified: 2026-06-17

Description

A system command injection vulnerability in zyshclient in ZyXEL NSA325 V2 version 4.81 allows attackers to execute system commands via the web application API.

Frequently asked questions

What is CVE-2018-14893?: A system command injection vulnerability in zyshclient in ZyXEL NSA325 V2 version 4.81 allows attackers to execute system commands via the web application API.
How severe is CVE-2018-14893?: CVE-2018-14893 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-14893 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-14893?: CVE-2018-14893 affects Zyxel Nsa325 V2 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-14893?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-14893 published?: CVE-2018-14893 was published on 2018-11-27 and last updated on 2026-06-17.

References

https://blog.securityevaluators.com/ise-labs-finds-vulnerabilities-in-zyxel-nsa325-945481a699b8

Affected products (1)

cpe:2.3:o:zyxel:nsa325_v2_firmware:4.81:*:*:*:*:*:*:*

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