High

CVE-2026-39478: Security Advisory

CVE-2026-39478 CVSS 8.8
Who it affects
Contributor PHP Object Injection in Anti-Malware Security and Brute-Force Firewall <= 4.23.87 versions.
What to do
Apply the vendor's update in your next patch window.
Deploy the fix with Action1AutomoxManageEngine Patch Manager PlusManageEngine Endpoint Central Are you exposed? Compare patch tools →

CVE-2026-39478 is a high-severity vulnerability (CVSS 8.8).

Summary

Contributor PHP Object Injection in Anti-Malware Security and Brute-Force Firewall <= 4.23.87 versions.

Remediation

Apply the vendor’s update during your next patch window and verify exposure. Patch-management tools that can deploy and verify the fix include Action1, Automox, ManageEngine Patch Manager Plus, ManageEngine Endpoint Central. See our best patch management ranking.

Sources

Data as of June 16, 2026. Sources: nvd.nist.gov, patchstack.com. Figures are pulled from public vendor and security data and refreshed automatically.