Is CVE-2019-8526 being actively exploited?

Yes. CVE-2019-8526 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on April 17, 2023.

What is the CVSS score for CVE-2019-8526?

CVE-2019-8526 has a CVSS 3.1 base score of 7.8 (HIGH).

CVE-2019-8526

HIGH · CVSS 7.8CISA KEV: actively exploitedEPSS 0.7%EU EUVD: exploited

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Mojave 10.14.4. An application may be able to gain elevated privileges.

Key facts

CVSS score: 7.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
EPSS score: 0.7% (52th percentile)
In CISA KEV: Yes, added April 17, 2023
In EU EUVD: Yes (EUVD-2019-17916)
Published: December 18, 2019
NVD last modified: June 17, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Apple macOS Use-After-Free Vulnerability

Added to the KEV catalog on April 17, 2023; federal remediation due May 8, 2023.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2019-17916 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 21, 2025.

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

https://support.apple.com/HT209600(Release Notes, Vendor Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-8526(US Government Resource)

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

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