Is CVE-2018-6346 in the CISA KEV catalog?

No. CVE-2018-6346 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-6346?

CVE-2018-6346 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2018-6346?

CVE-2018-6346 has an EPSS score of 1.37% (68th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-6346?

Upgrade proxygen to 2018.12.31.00 or later.

CVE & CISA-KEV Catalog

CVE-2018-6346

HIGH

7.5

CVSS v3

NVD

Description

A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 priority settings (specifically a circular dependency). This affects Proxygen prior to v2018.12.31.00.

CWE-400Resource Exhaustion CWE-388

How to fix

Remediation Available

proxygenNVD

Affected:< 2018.12.31.00Fixed in:2018.12.31.00CVE-2018-6346derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.37%probability of exploitation in 30 days

68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Patch1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-06.