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CVE-2019-8526

Apple macOS Use-After-Free

7.8 HIGHActively exploited (CISA KEV)EPSS 0.70%
  1. Published18 Dec 2019
  2. Added to CISA KEV17 Apr 2023
  3. Remediation due8 May 2023
Actively exploited (CISA KEV)

Apple macOS contains a use-after-free vulnerability that could allow for privilege escalation.

Added to KEV: 17 Apr 2023Federal remediation due: 8 May 2023

Description

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 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Apple Mac OS X< 10.14.4

Remediation

Fixed in
Apple Mac OS X≥ 10.14.4
Patch & vendor advisories

References

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Frequently asked

Is CVE-2019-8526 being actively exploited?

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

How severe is CVE-2019-8526?

CVE-2019-8526 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.70% probability of exploitation.

Which products are affected by CVE-2019-8526?

Affected products include Apple Mac OS X.

How do I fix CVE-2019-8526?

Upgrade affected software to a fixed version, for example Apple Mac OS X 10.14.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2019-8526 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.