Imunify360 — Duplicate RustBolit scan processes causing high resource usage

Incident Report for Imunify360

Resolved

Packages: ids-8.13.6-9 and av-8.8.5-2 are released in stable.

Posted Jul 24, 2026 - 12:41 UTC

Monitoring

A fix has been implemented and we are monitoring the results.

Posted Jul 23, 2026 - 07:53 UTC

Investigating

We are aware of an issue where multiple duplicate RustBolit malware scanner processes may accumulate on servers running Imunify360 8.13.6 with RustBolit 33.3.14, leading to excessive CPU, RAM, and I/O consumption. In severe cases, this can render the server unresponsive.

A workaround is available: Imunify360 RustBolit duplicate scan processes cause high CPU, RAM, and I/O usage
https://cloudlinux.zendesk.com/hc/en-us/articles/28982664003868-Imunify360-RustBolit-duplicate-scan-processes-cause-high-CPU-RAM-and-I-O-usage

Our engineering team is actively working on a permanent fix. We will update this entry once a patched release is available.

Posted Jul 21, 2026 - 06:02 UTC

This incident affected: Antivirus.