Mitel MiVoice Office 400: Path Traversal: 'dir....filename'
CVE-2026-104706 is a high-severity path traversal: 'dir....filename' vulnerability in Mitel MiVoice Office 400 from Mitel, with a CVSS 4.0 base score of 8.4 out of 10. It can be exploited with local access to the system by an attacker with administrator privileges, without any action from a user. Affected Mitel MiVoice Office 400 versions: 11.0.96.0. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.14% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Mitel MiVoice Office 400 you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Mitel | Mitel MiVoice Office 400 | 11.0.96.0 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Attack requirements
- NoneThe attack does not depend on a particular deployment or configuration.
- Privileges required
- HighAdministrator-level access is required first.
- User interaction
- NoneNo action by a victim is required.
- Confidentiality (vulnerable system)
- HighSerious loss of confidentiality on the vulnerable system.
- Integrity (vulnerable system)
- HighSerious loss of integrity on the vulnerable system.
- Availability (vulnerable system)
- HighSerious loss of availability on the vulnerable system.
- Confidentiality (other systems)
- HighSerious loss of confidentiality on systems beyond the vulnerable one.
- Integrity (other systems)
- HighSerious loss of integrity on systems beyond the vulnerable one.
- Availability (other systems)
- HighSerious loss of availability on systems beyond the vulnerable one.
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Amber. Scored by CNA (ncsc.ch).
Official description
DigitalCanion has discovered a path traversal vulnerability that allows to view or download sensitive system files over the portal https://<ip>:8443 via menus Administration -> View Logs
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Path Traversal: 'dir....filename'
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize 'dir....filename' (multiple internal backslash dot dot) sequences that can resolve to a location that is outside of that directory.
How developers prevent this class of flaw
- Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
More Path Traversal: 'dir....filename' vulnerabilities (CWE-31)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in Mitel MiVoice Office 400
- 8.4 High severity
- 8.4 High severity
- 8.4 High severity
- 8.5 High severity
Recent Path Traversal: 'dir....filename' vulnerabilities
- 7.5 High severity
- 8.8 High severity
- 9.9 Critical severity
- 7.5 High severity
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