How severe is CVE-2018-6667?

CVE-2018-6667 has a CVSS 3.x base score of 10.0, 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-2018-6667 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6667?

CVE-2018-6667 affects Mcafee Mcafee Web Gateway. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6667?

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-2018-6667 published?

CVE-2018-6667 was published on 2018-06-26 and last updated on 2026-06-17.

CVE-2018-6667

CVE-2018-6667 is a critical-severity vulnerability in Mcafee Mcafee Web Gateway with a CVSS 3.x base score of 10.0. 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v2: 7.5
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Mcafee Mcafee Web Gateway
Published: 2018-06-26
Last modified: 2026-06-17

Description

Authentication Bypass vulnerability in the administrative user interface in McAfee Web Gateway 7.8.1.0 through 7.8.1.5 allows remote attackers to execute arbitrary code via Java management extensions (JMX).

Frequently asked questions

What is CVE-2018-6667?: Authentication Bypass vulnerability in the administrative user interface in McAfee Web Gateway 7.8.1.0 through 7.8.1.5 allows remote attackers to execute arbitrary code via Java management extensions (JMX).
How severe is CVE-2018-6667?: CVE-2018-6667 has a CVSS 3.x base score of 10.0, 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-2018-6667 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6667?: CVE-2018-6667 affects Mcafee Mcafee Web Gateway. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6667?: 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-2018-6667 published?: CVE-2018-6667 was published on 2018-06-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mcafee:mcafee_web_gateway:*:*:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

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