CVE-2026-104809 PUBLISHED

Mitel MiVoice Office 400 Shared Object Hijacking Leading to Arbitrary Code Execution

Assigner: NCSC.ch
Reserved: 02.10.2026 Published: 05.10.2026 Updated: 05.10.2026

DigitalCanion has discovered a vulnerability that allows an attacker to cause the system to load an attacker-controlled .so file instead of the expected legitimate module. The loading mechanism relies on a predictable module name without adequately verifying the file’s origin or integrity. A malicious shared object using the expected name can therefore be loaded by a privileged process. The module code then executes within the context and privileges of that process. This results in arbitrary code execution and full compromise of the Mitel Linux virtual machine.

Metrics

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/AU:Y/U:Amber
CVSS Score: 8.4

Product Status

Vendor Mitel
Product Mitel MiVoice Office 400
Versions Default: unknown
  • Version 11.0.96.0 is affected

Credits

  • Brian Mariani from DigitalCanion SA finder

References

Problem Types

  • CWE-73 External control of file name or path CWE
  • CWE-494 Download of code without integrity check CWE
  • CWE-829 Inclusion of functionality from untrusted control sphere CWE
  • CWE-426 — Untrusted Search Path CWE
  • CWE-427 — Uncontrolled Search Path Element CWE

Impacts

  • CAPEC-471 — Search Order Hijacking
  • CAPEC-159 — Redirect Access to Libraries
  • CAPEC-642 — Replace Binaries