High 8.4Published Oct 5, 2026

CVE-2026-104809Mitel MiVoice Office 400 Shared Object Hijacking Leading to Arbitrary Code Execution

Updated under an hour ago (2026-10-19 09:40 UTC)

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It affects Mitel MiVoice Office 400. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.09%, higher than 0% of scored CVEs.

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Every CVE for Mitel MiVoice Office 400

Exploited in the last 30 days

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.

CVSS: 8.4 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-73, CWE-494, CWE-829, CWE-426, CWE-427
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.09% (percentile 0)
Assigned by: NCSC.ch
NVD analysis: Deferred
Record last updated: Oct 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Mitel Mitel MiVoice Office 400 mitel:mivoice_office_400 (from the name)	11.0.96.0	CNA record

References

https://digitalcanion.com/en/security-research/#vendor=mitel&status=cna

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.