Quick answers
- Is CVE-2026-54406 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-54406 being exploited in the wild.
- How severe is CVE-2026-54406?
- High severity, with a CVSS score of 8.7, published 2 July 2026.
- Which products and versions are affected?
- Ubiquiti UniFi Network Application versions before 10.4.57.
- Is there a fix for CVE-2026-54406?
- 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-2026-54406 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-54406?
- Check whether you run Ubiquiti UniFi Network Application 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
A path traversal vulnerability (CWE-22) exists in self-hosted instances of Ubiquiti UniFi Network Application. The flaw allows a remote attacker with high-level administrative privileges to bypass intended file system restrictions. By submitting specially crafted input, the attacker can gain unauthorized write access to files on the host operating system. This vulnerability is tracked as CVE-2026-54406 and has been addressed in UniFi Network Application version 10.4.57. The exploit requires network connectivity to the management interface but does not require user interaction beyond the attacker's own actions.
Affected products
- Ubiquiti Inc UniFi Network Application versions before 10.4.57
Timeline
- 2026-07-02: advisory: Ubiquiti published Security Advisory Bulletin 066-066
- 2026-07-02: disclosed: CVE-2026-54406 published to the NVD dataset