Quick answers
- Is CVE-2026-104805 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-104805 being exploited in the wild.
- How severe is CVE-2026-104805?
- Informational severity, published 5 October 2026.
- Which products and versions are affected?
- Mitel MiVoice Office 400 up to version 11.0.96.0.
- Is there a fix for CVE-2026-104805?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-104805 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-104805?
- Check whether you run Mitel MiVoice Office 400 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The backup restoration mechanism fails to validate file paths, types, integrity, and authenticity before extracting TGZ archives, allowing a specially crafted backup to contain arbitrary attacker-controlled files. An attacker with access to the configured SFTP backup repository can provide a malicious archive that places files on the Linux system with permissions allowing arbitrary code execution as root. The lack of enforced backup passwords further reduces protection.
Affected products
- Mitel MiVoice Office 400 up to version 11.0.96.0
Timeline
- 2026-10-05: disclosed