How severe is CVE-2018-9859?

CVE-2018-9859 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-9859 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-9859?

CVE-2018-9859 affects Navercorp Whale. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-9859?

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-2018-9859 published?

CVE-2018-9859 was published on 2018-06-16 and last updated on 2026-06-17.

CVE-2018-9859

CVE-2018-9859 is a high-severity vulnerability in Navercorp Whale with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.1
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Navercorp Whale
Published: 2018-06-16
Last modified: 2026-06-17

Description

The path of Whale update service was unquoted in NAVER Whale before 1.0.40.7. This vulnerability can be used for persistent privilege escalation if it's available to create an executable file with System privilege by other vulnerable applications.

Frequently asked questions

What is CVE-2018-9859?: The path of Whale update service was unquoted in NAVER Whale before 1.0.40.7. This vulnerability can be used for persistent privilege escalation if it's available to create an executable file with System privilege by other vulnerable applications.
How severe is CVE-2018-9859?: CVE-2018-9859 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-9859 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-9859?: CVE-2018-9859 affects Navercorp Whale. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-9859?: 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-2018-9859 published?: CVE-2018-9859 was published on 2018-06-16 and last updated on 2026-06-17.

References

https://cve.naver.com/detail/cve-2018-9859.html

Affected products (1)

cpe:2.3:a:navercorp:whale:*:*:*:*:*:*:*:*

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