CVE-2026-104810 Mitel MiVoice Office 400 - Path Traversal

Mitel MiVoice Office 400 contains a path traversal vulnerability in the web portal's File Browser under Maintenance → File Management, letting authenticated attackers delete sensitive files outside intended directories, causing denial of service.

CVSS base score 8.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.35% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Path Traversal
Impact
Denial Of Service, File System Write
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/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
Published
5 October 2026
Updated
15 October 2026
Weakness
CWE-31

Vendor fix

Update to the latest Mitel MiVoice Office 400 version with the vulnerability fixed.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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