Back to Security Advisories

Security Advisory: Imunify360 Kernel Exploit Protection

This is a security release for AlmaLinux 9, CentOS 7. Update the product on every affected server to the patched release — there is no workaround, and unpatched servers remain exposed until updated.

Medium
Imunify360 AlmaLinux 9 CentOS 7 Ubuntu 22.04

Affected Versions

5.5.0 and earlier

Patched Version

5.6.0

Default Update CMD

yum update -y

Fix Commands

CentOS 7 / AlmaLinux 9

yum clean all
yum update imunify360-firewall

Ubuntu 22.04

apt update
apt install --only-upgrade imunify360-firewall

What this means under a SharedLicense license

Your SharedLicense license itself is not affected — this is a change in Imunify360 software, not in licensing. Update the product through its standard update channel. Licenses keep working through updates; nothing needs re-issuing or re-activating.

A kernel-level exploit bypass was discovered in Imunify360 active protection, reducing effectiveness of exploit detection on newer kernels.

References

Security Advisories

Related Advisories

EasyApache 4 25.81 — cPanel & WHM Update

2026-09-30

Plesk CVE-2026-68492: Untrusted Search Path

2026-09-23 00:00:00

Plesk CVE-2026-87898: OS Command Injection

2026-09-23 00:00:00

Check your system for vulnerabilities

Select your product and operating system to see the exact fix commands that apply to you.

Check Your System