Is CVE-2018-4091 being actively exploited?

CVE-2018-4091 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2018-4091?

CVE-2018-4091 has a CVSS 3.0 base score of 10.0 (CRITICAL).

CVE-2018-4091

CRITICAL · CVSS 10.0EPSS 1.7%EU EUVD

An issue was discovered in certain Apple products. macOS before 10.13.3 is affected. The issue involves the "Sandbox" component. It allows bypass of a sandbox protection mechanism.

Key facts

CVSS score: 10.0 (v3.0)
Severity: CRITICAL
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS score: 1.7% (77th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2018-15877)
Published: April 3, 2018
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2018-15877 in the EU Vulnerability Database. Last updated in EUVD on August 5, 2024.

View on the EU Vulnerability Database

Affected products

apple / mac os x

Certified products that may be affected

2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Apple Mac OS X 10.6 - Apple Inc. - Common Criteria BSI-DSZ-CC-0536-2010 - archived
Apple Mac OS X v10.3.6 and Apple Mac OS X Server V10.3.6 - Apple Inc. - Common Criteria CCEVS-VR-0086-2005 - archived

References

http://www.securityfocus.com/bid/102785(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1040267(Third Party Advisory, VDB Entry)
https://support.apple.com/HT208465(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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