Release Date: October 19, 2018

CVE Vulnerability Identifiers: CVE-2018-15366, CVE-2018-15367, CVE-2018-18327, CVE-2018-18328, CVE-2018-18329

Platform: macOS

CVSS 3.0 Scores: 6.9

Severity Ratings: Medium


Trend Micro has released fixes for the Trend Micro Antivirus for Mac family of consumer products which resolve vulnerabilities that could allow an attacker to escalate privileges on a vulnerable system that they otherwise would not have had access to.

Affected versions

ProductAffected VersionsPlatformLanguage(s)
Antivirus for Mac 2019 9.0.1356 and below macOS English
Antivirus for Mac 2018 8.0.3082 and below macOS English
Antivirus for Mac 2017 7.1.1124 and below macOS English


ProductUpdated BuildPlatformLanguage(s)
All Versions Above Any version above 7.0 macOS English

Trend Micro has addressed these vulnerabilities via a patch that is available now through the product’s automatic ActiveUpdate feature for all versions of Trend Micro Antivirus for Mac listed above. Customers who have at least version 7.0 will already have the necessary patch applied with the latest update.

Vulnerability Details

This patch includes mitigations for the following vulnerabilities:

  • CVE-2018-15366: Use-After-Free Privilege Escalation Vulnerability
  • CVE-2018-15367, CVE-2018-18327, CVE-2018-18328, CVE-2018-18329: Untrusted Pointer Dereference Privilege Escalation Vulnerability

Trend Micro has received no reports nor is aware of any actual attacks against the affected products related to this vulnerability at this time.

Mitigating Factors

Exploiting these types of vulnerabilities require that an attacker has access (physical or remote) to a vulnerable machine.

Even though an exploit may require several specific conditions to be met, Trend Micro bly encourages customers to upgrade to the latest build as soon as possible.


Trend Micro would like to thank the following individuals and/or organizations for responsibly disclosing these issues and working with Trend Micro to help protect our customers:

External References

The following advisories may be found by visiting the following sites:

CVE-2018-15366 ZDI-18-1293
CVE-2018-15367 ZDI-18-1294
CVE-2018-18327 ZDI-18-1295
CVE-2018-18328 ZDI-18-1296
CVE-2018-18329 ZDI-18-1297
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