How severe is CVE-2018-16166?

CVE-2018-16166 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-16166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16166?

CVE-2018-16166 affects Jpcert Logontracer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-16166?

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-2018-16166 published?

CVE-2018-16166 was published on 2019-01-09 and last updated on 2026-06-17.

CVE-2018-16166

CVE-2018-16166 is a high-severity vulnerability in Jpcert Logontracer with a CVSS 3.x base score of 8.8. 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-611.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Jpcert Logontracer
Published: 2019-01-09
Last modified: 2026-06-17

Description

LogonTracer 1.2.0 and earlier allows remote attackers to conduct XML External Entity (XXE) attacks via unspecified vectors.

Frequently asked questions

What is CVE-2018-16166?: LogonTracer 1.2.0 and earlier allows remote attackers to conduct XML External Entity (XXE) attacks via unspecified vectors.
How severe is CVE-2018-16166?: CVE-2018-16166 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-16166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16166?: CVE-2018-16166 affects Jpcert Logontracer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-16166?: 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-2018-16166 published?: CVE-2018-16166 was published on 2019-01-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jpcert:logontracer:*:*:*:*:*:*:*:*

More vulnerabilities in Jpcert Logontracer

CVE-2018-16168 — Critical (CVSS 9.8): LogonTracer 1.2.0 and earlier allows remote attackers to conduct Python code injection attacks via unspecified vectors.
CVE-2018-16167 — Critical (CVSS 9.8): LogonTracer 1.2.0 and earlier allows remote attackers to execute arbitrary OS commands via unspecified vectors.
CVE-2026-33277 — High (CVSS 8.8): An OS command Injection issue exists in LogonTracer prior to v2.0.0. An arbitrary OS command may be executed by a…
CVE-2018-16165 — Medium (CVSS 6.1): Cross-site scripting vulnerability in LogonTracer 1.2.0 and earlier allows remote attackers to inject arbitrary web…
CVE-2026-33566 — Medium (CVSS 4.3): There is a cypher injection issue in LogonTracer prior to v2.0.0. If specially crafted Windows event log data is…

All CVEs affecting Jpcert Logontracer →

Other CWE-611 (Improper Restriction of XML External Entity Reference (XXE)) vulnerabilities

CVE-2022-22486 — Critical (CVSS 10.0): IBM Tivoli Workload Scheduler 9.4, 9.5, and 10.1 is vulnerable to an XML External Entity Injection (XXE) attack when…
CVE-2019-14678 — Critical (CVSS 10.0): SAS XML Mapper 9.45 has an XML External Entity (XXE) vulnerability that can be leveraged by malicious attackers in…
CVE-2015-9280 — Critical (CVSS 10.0): MailEnable before 8.60 allows XXE via an XML document in the request.aspx Options parameter.
CVE-2018-1000838 — Critical (CVSS 10.0): autopsy version <= 4.9.0 contains a XML External Entity (XXE) vulnerability in CaseMetadata XML Parser that can result…
CVE-2018-1000837 — Critical (CVSS 10.0): UML Designer version <= 8.0.0 contains a XML External Entity (XXE) vulnerability in XML parser for plugins that can…
CVE-2018-1000835 — Critical (CVSS 10.0): KeePassDX version <= 2.5.0.0beta17 contains a XML External Entity (XXE) vulnerability in kdbx file parser that can…

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