How severe is CVE-2018-17066?

CVE-2018-17066 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-2018-17066 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17066?

CVE-2018-17066 affects Dlink Dir-816 A2 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-17066?

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-2018-17066 published?

CVE-2018-17066 was published on 2018-09-15 and last updated on 2026-06-17.

CVE-2018-17066

CVE-2018-17066 is a critical-severity vulnerability in Dlink Dir-816 A2 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% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Dlink Dir-816 A2 Firmware
Published: 2018-09-15
Last modified: 2026-06-17

Description

An issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. An HTTP request parameter is used in command string construction in the handler function of the /goform/form2systime.cgi route. This could lead to command injection via shell metacharacters in the datetime parameter.

Frequently asked questions

What is CVE-2018-17066?: An issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. An HTTP request parameter is used in command string construction in the handler function of the /goform/form2systime.cgi route. This could lead to command injection via shell metacharacters in the datetime parameter.
How severe is CVE-2018-17066?: CVE-2018-17066 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-2018-17066 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17066?: CVE-2018-17066 affects Dlink Dir-816 A2 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-17066?: 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-2018-17066 published?: CVE-2018-17066 was published on 2018-09-15 and last updated on 2026-06-17.

References

https://github.com/PAGalaxyLab/VulInfo/tree/master/D-Link/DIR-816/cmd_injection_0

Affected products (1)

cpe:2.3:o:dlink:dir-816_a2_firmware:1.10_b05:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-816 A2 Firmware

CVE-2023-43240 — Critical (CVSS 9.8): D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter sip_address in ipportFilter.
CVE-2023-43239 — Critical (CVSS 9.8): D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter flag_5G in showMACfilterMAC.
CVE-2023-43238 — Critical (CVSS 9.8): D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter nvmacaddr in form2Dhcpip.cgi.
CVE-2023-43237 — Critical (CVSS 9.8): D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter macCloneMac in setMAC.
CVE-2023-43236 — Critical (CVSS 9.8): D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter statuscheckpppoeuser in…
CVE-2018-17068 — Critical (CVSS 9.8): An issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. An HTTP request parameter is used in command string…

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