How severe is CVE-2018-14839?

CVE-2018-14839 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-2018-14839 being actively exploited?

Yes. CVE-2018-14839 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-25, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2018-14839?

CVE-2018-14839 affects Lg N1a1 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-14839?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2018-14839 have an EU (EUVD) identifier?

Yes. CVE-2018-14839 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-6722. It is also flagged as exploited in the EUVD (since 2022-03-25).

When was CVE-2018-14839 published?

CVE-2018-14839 was published on 2019-05-14 and last updated on 2026-06-17.

CVE-2018-14839

CVE-2018-14839 is a critical-severity vulnerability in Lg N1a1 Firmware with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-03-25). The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 89% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-03-25)
EU (EUVD) id: EUVD-2018-6722
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-03-25)
Weakness: CWE-78
Affected product: Lg N1a1 Firmware
Published: 2019-05-14
Last modified: 2026-06-17

Description

LG N1A1 NAS 3718.510 is affected by: Remote Command Execution. The impact is: execute arbitrary code (remote). The attack vector is: HTTP POST with parameters.

Frequently asked questions

What is CVE-2018-14839?: LG N1A1 NAS 3718.510 is affected by: Remote Command Execution. The impact is: execute arbitrary code (remote). The attack vector is: HTTP POST with parameters.
How severe is CVE-2018-14839?: CVE-2018-14839 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-2018-14839 being actively exploited?: Yes. CVE-2018-14839 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-25, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2018-14839?: CVE-2018-14839 affects Lg N1a1 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-14839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2018-14839 have an EU (EUVD) identifier?: Yes. CVE-2018-14839 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-6722. It is also flagged as exploited in the EUVD (since 2022-03-25).
When was CVE-2018-14839 published?: CVE-2018-14839 was published on 2019-05-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:lg:n1a1_firmware:3718.510:*:*:*:*:*:*:*

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