Press CTRL+K to open search

Application and Change Control 6.6.9 (Linux) Hotfix 1 Release Notes

  • Published on Aug 31, 2026
  • 1 minute(s) read
Prev Next

Information about TACC 6.6.9 Hotfix 1 release

This Hotfix (HF1) for Trellix Application and Change Control (TACC) 6.6.9 provides support for the latest Linux kernel releases, including RHEL 10.1 and Ubuntu 24.04. To maintain a hardened security posture and ensure compliance, this release includes proactive updates to product libraries.

Release date — January 13, 2026

Release build:

TACC Client — 6.6.9.508

This hotfix build was developed and tested with:

  • Trellix ePolicy Orchestrator® 5.10.x

Note: This hotfix does not support the automatic upgrade of a pre-release software version. To upgrade to a production release of the software, you must first uninstall any pre-release versions.

Rating

The rating defines the urgency for installing this hotfix.

Critical: This hotfix is critical for RHEL 10.1 environments. Failure to apply this update can result in system instability or service disruptions.

Recommended: For all other supported environments, this update is recommended to maintain security and performance.

New or changed

Libcurl upgrade—This release upgrades the Libcurl version to 8.17.0.

OpenSSL upgrade—This release upgrades the OpenSSL version to 3.6.0.

New kernel support—This release supports the latest Linux kernel versions on the following platforms:

  • Ubuntu 18

    • 4.15.0-234-generic

  • Ubuntu 20

    • 5.15.0-163-generic

  • Ubuntu 22

    • 5.15.0-163-generic

  • Ubuntu 24

    • 6.8.0-88-generic

    • 6.14.0-24-generic

    • 6.14.0-27-generic

  • Oracle 9

    • 6.12.0-1.23.3.2.el9uek.x86_64

  • Red Hat Enterprise Linux 10

    • 6.12.0-124.11.1.el10_1.x86_64

    • 6.12.0-124.13.1.el10_1.x86_64

    • 6.12.0-124.16.1.el10_1.x86_64

    • 6.12.0-124.20.1.el10_1.x86_64

    • 6.12.0-124.21.1.el10_1.x86_64

For the complete list of kernels supported, see Linux kernel support for Application and Change Control 6.x.

Known issues

For a list of current known issues, see Application Control 6.x Known Issues.

Installation instructions

For information about installing or upgrading Application and Change Control software, see Trellix Application and Change Control 6.6.x Installation Guide.

Related articles