CVE-2019-8526

HIGHNVD 7.89.0▲Trending — 4 sources updated this weekExploited in the wild

7.8

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.

CVSS v3: 7.8
EG Score: 9.0(high)
EPSS: 43.5%
KEV: ⚠ Exploited

Published

December 18, 2019

Last Modified

October 23, 2025

Advisory Details (2)

Auto-updated Jun 4, 2026

⚠️ Active exploitation confirmed. Patch available. Sources: cisa.

cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-8526

generic

About the security content of macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra - Apple Support

https://support.apple.com/HT209600

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-416Use After Free

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-10 05:25 UTCEG score recompute
2026-06-10 05:25 UTCGHSA enrichment
2026-06-10 01:26 UTCEG score recompute
2026-06-10 01:26 UTCGHSA enrichment
2026-06-09 21:26 UTCEG score recompute
2026-06-09 21:26 UTCGHSA enrichment
2026-06-09 18:42 UTCCISA KEV update
2026-06-09 17:25 UTCEG score recompute
2026-06-09 17:25 UTCGHSA enrichment
2026-06-09 17:12 UTCCISA KEV update
2026-06-09 13:23 UTCEG score recompute
2026-06-09 13:23 UTCGHSA enrichment
2026-06-09 09:24 UTCEG score recompute
2026-06-09 09:23 UTCGHSA enrichment
2026-06-09 05:24 UTCEG score recompute
2026-06-09 05:24 UTCGHSA enrichment
2026-06-09 01:24 UTCEG score recompute
2026-06-09 01:24 UTCGHSA enrichment
2026-06-08 21:24 UTCEG score recompute
2026-06-08 21:24 UTCGHSA enrichment

Frequently asked(6)

What is CVE-2019-8526?

CVE-2019-8526 is a high vulnerability published on December 18, 2019. 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.

When was CVE-2019-8526 disclosed?

CVE-2019-8526 was first published in the National Vulnerability Database on December 18, 2019, with the most recent update on October 23, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-8526 actively exploited?

Yes. CISA added CVE-2019-8526 to the Known Exploited Vulnerabilities catalog on April 17, 2023, affecting Apple macOS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

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

CVE-2019-8526 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2019-8526?

CVE-2019-8526 affects Apple macOS. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2019-8526?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-8526, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-8526

Explore →

Is Your Infrastructure Affected by CVE-2019-8526?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2019-8526

📅 Published

🔄 Last Modified

📋 Advisory Details (2)