How severe is CVE-2018-20114?

CVE-2018-20114 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-2018-20114 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20114?

CVE-2018-20114 primarily affects Dlink Dir-818lw Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-20114?

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-2018-20114 published?

CVE-2018-20114 was published on 2019-01-02 and last updated on 2026-06-17.

CVE-2018-20114

CVE-2018-20114 is a critical-severity vulnerability in Dlink Dir-818lw 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Dlink Dir-818lw Firmware
Published: 2019-01-02
Last modified: 2026-06-17

Description

On D-Link DIR-818LW Rev.A 2.05.B03 and DIR-860L Rev.B 2.03.B03 devices, unauthenticated remote OS command execution can occur in the soap.cgi service of the cgibin binary via an "&&" substring in the service parameter. NOTE: this issue exists because of an incomplete fix for CVE-2018-6530.

Frequently asked questions

What is CVE-2018-20114?: On D-Link DIR-818LW Rev.A 2.05.B03 and DIR-860L Rev.B 2.03.B03 devices, unauthenticated remote OS command execution can occur in the soap.cgi service of the cgibin binary via an "&&" substring in the service parameter. NOTE: this issue exists because of an incomplete fix for CVE-2018-6530.
How severe is CVE-2018-20114?: CVE-2018-20114 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-2018-20114 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20114?: CVE-2018-20114 primarily affects Dlink Dir-818lw Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-20114?: 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-2018-20114 published?: CVE-2018-20114 was published on 2019-01-02 and last updated on 2026-06-17.

References

https://github.com/pr0v3rbs/CVE/tree/master/CVE-2018-20114

Affected products (2)

cpe:2.3:o:dlink:dir-818lw_firmware:2.05.b03:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-860l_firmware:2.03.b03:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-818lw Firmware

CVE-2019-13482 — High (CVSS 8.8): An issue was discovered on D-Link DIR-818LW devices with firmware 2.06betab01. There is a command injection in HNAP1…
CVE-2019-13481 — High (CVSS 8.8): An issue was discovered on D-Link DIR-818LW devices with firmware 2.06betab01. There is a command injection in HNAP1…
CVE-2019-12787 — High (CVSS 8.8): An issue was discovered on D-Link DIR-818LW devices from 2.05.B03 to 2.06B01 BETA. There is a command injection in…
CVE-2019-12786 — High (CVSS 8.8): An issue was discovered on D-Link DIR-818LW devices from 2.05.B03 to 2.06B01 BETA. There is a command injection in…
CVE-2025-7553 — Medium (CVSS 4.7): A vulnerability classified as critical has been found in D-Link DIR-818LW up to 20191215. This affects an unknown part…
CVE-2025-9003 — Low (CVSS 3.5): A vulnerability has been found in D-Link DIR-818LW 1.04. This vulnerability affects unknown code of the file…

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