The stub component of Absolute Computrace Agent V70.785 executes code from a disk's inter-partition space without requiring a digital signature for that code, which allows attackers to execute code on the BIOS. This allows a privileged local user to achieve persistent control of BIOS behavior, independent of later disk changes.

References

• https://nvd.nist.gov/vuln/detail/CVE-2009-5151
• https://www.coresecurity.com/system/files/publications/2016/05/Paper-Deactivate-the-Rootkit-AOrtega-ASacco.pdf