How severe is CVE-2018-17867?

CVE-2018-17867 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-17867 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17867?

CVE-2018-17867 affects Dasannetworks H660gw Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-17867?

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-2018-17867 published?

CVE-2018-17867 was published on 2018-10-01 and last updated on 2026-06-17.

CVE-2018-17867

CVE-2018-17867 is a high-severity vulnerability in Dasannetworks H660gw Firmware with a CVSS 3.x base score of 7.2. 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: High (CVSS 3.x base score 7.2)
CVSS v2: 9.0
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Dasannetworks H660gw Firmware
Published: 2018-10-01
Last modified: 2026-06-17

Description

The Port Forwarding functionality on DASAN H660GW devices allows remote attackers to execute arbitrary code via shell metacharacters in the cgi-bin/adv_nat_virsvr.asp Addr parameter (aka the Local IP Address field).

Frequently asked questions

What is CVE-2018-17867?: The Port Forwarding functionality on DASAN H660GW devices allows remote attackers to execute arbitrary code via shell metacharacters in the cgi-bin/adv_nat_virsvr.asp Addr parameter (aka the Local IP Address field).
How severe is CVE-2018-17867?: CVE-2018-17867 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-17867 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17867?: CVE-2018-17867 affects Dasannetworks H660gw Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-17867?: 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-2018-17867 published?: CVE-2018-17867 was published on 2018-10-01 and last updated on 2026-06-17.

References

https://wojciechregula.blog/authenticated-rce-in-dasan-routers/

Affected products (1)

cpe:2.3:o:dasannetworks:h660gw_firmware:-:*:*:*:*:*:*:*

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