Back to Security Advisories

Security Advisory: Imunify360 Kernel Exploit Protection

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

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

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

References

Security Advisories

Related Advisories

Security: Privilege Escalation via Phusion Passenger’s Watchdog API

2026-09-08

Security: CVE-2026-41940 – cPanel & WHM / WP2 Security Update 04/28/2026

2026-09-08

Security: CSF Security Release – September 3rd, 2026

2026-09-08

Check your system for vulnerabilities

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

Check Your System