How severe is CVE-2018-17228?

CVE-2018-17228 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-2018-17228 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17228?

CVE-2018-17228 affects Nmap4j Project Nmap4j. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-17228?

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-2018-17228 published?

CVE-2018-17228 was published on 2018-09-19 and last updated on 2026-06-17.

CVE-2018-17228

CVE-2018-17228 is a critical-severity vulnerability in Nmap4j Project Nmap4j 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: 7.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Nmap4j Project Nmap4j
Published: 2018-09-19
Last modified: 2026-06-17

Description

nmap4j 1.1.0 allows attackers to execute arbitrary commands via shell metacharacters in an includeHosts call.

Frequently asked questions

What is CVE-2018-17228?: nmap4j 1.1.0 allows attackers to execute arbitrary commands via shell metacharacters in an includeHosts call.
How severe is CVE-2018-17228?: CVE-2018-17228 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-2018-17228 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17228?: CVE-2018-17228 affects Nmap4j Project Nmap4j. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-17228?: 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-2018-17228 published?: CVE-2018-17228 was published on 2018-09-19 and last updated on 2026-06-17.

References

https://github.com/narkisr/nmap4j/issues/9

Affected products (1)

cpe:2.3:a:nmap4j_project:nmap4j:1.1.0:*:*:*:*:*:*:*

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