Mitel MiVoice Office 400 shared object hijacking allows code execution
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-426.
Summary
Mitel MiVoice Office 400 from 11.0.96.0 is affected. A privileged process loads a shared object by a predictable module name without verifying its origin or integrity (CWE-426), so a local attacker with high privileges can supply a malicious .so file under that name. The malicious module then runs with the privileges of that process, allowing full compromise of the Mitel Linux virtual machine.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Mitel MiVoice Office 400.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-05 Threatist record created from CVE-2026-104809
- 2026-10-05 Alias added: GHSA-vr7j-w64f-pgvw
More Mitel vulnerabilities
- TI-2022-11960 The Service Appliance component in Mitel MiVoice Connect through 19.2 SP3 allows remote… KEVCVSS 3.1CRITICAL 9.8
- TI-2022-09601 The TP-240 (aka tp240dvr) component in Mitel MiCollab before 9.4 SP1 FP1 and MiVoice… KEVCVSS 3.1CRITICAL 9.8
- TI-2024-27773 A vulnerability in the NuPoint Unified Messaging (NPM) component of Mitel MiCollab… KEVCVSS 3.1CRITICAL 9.1
- TI-2024-27770 A vulnerability in the Mitel 6800 Series, 6900 Series, and 6900w Series SIP Phones… KEVCVSS 3.1HIGH 7.2
- TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
- TI-2022-19733 The Director database component of MiVoice Connect through 19.3 (22.22.6100.0) could… KEVCVSS 3.1MEDIUM 6.8
Sources
- CVE-2026-104809 · CVE Program
- CVE-2026-104809 · NVD
- FIRST EPSS
- GHSA-vr7j-w64f-pgvw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences