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Vulnerabilities

Vulnerability · CVE-2019-8526

Apple macOS Use-After-Free Vulnerability

Published Dec 18, 2019 · catalog updated Jun 16, 2026 · Apple MacOS X

Patch now

CVE-2019-8526 is in the CISA known-exploited catalog, due May 8, 2023. Confirm Apple MacOS X against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.70%
Remediation
Remediation guidance
Affected products
cpe apple/mac os x · vendor Apple MacOS X · vendor Apple macOS

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apple/mac os xversion unspecified
  • vendor Apple MacOS Xversion unspecified
  • vendor Apple macOSversion unspecified

How to fix CVE-2019-8526

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2019-8526 is in the CISA known-exploited catalog, due May 8, 2023. Confirm Apple MacOS X against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-416: Use After Free. EPSS 0.70%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 18, 2019 · Catalog

    Detected

    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.

  2. Apr 17, 2023 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 8, 2023 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2019-8526

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

    cisa.gov
  • CVE.orgVulnerability recordCVE-2019-8526

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-8526

    30-day exploitation probability 0.7%

    first.org
  • NIST NVDVulnerability recordCVE-2019-8526

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2019-8526

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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.