What is CVE-2020-8267?

CVE-2020-8267 is a medium-severity vulnerability in Ui Unifi Protect Firmware, classified under Improper Authentication. CVSS score: 5.3/10. Published 2020-11-05.

How severe is CVE-2020-8267?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Ui Unifi Protect Firmware

CVE-2020-8267

A security issue was found in UniFi Protect controller v1.14.10 and earlier.The authentication in the UniFi Protect controller API was using “x-token” improperly, allowing attackers to use the API to send authenticated messages without a valid token.This vulnerability was fixed in UniFi Protect v1.14.11 and newer.This issue does not impact UniFi Cloud Key Gen 2 plus.This issue does not impact UDM-Pro customers with UniFi Protect stopped.Affected Products:UDM-Pro firmware 1.7.2 and earlier.UNVR firmware 1.3.12 and earlier.Mitigation:Update UniFi Protect to v1.14.11 or newer version; the UniFi Protect controller can be updated through your UniFi OS settings.Alternatively, you can update UNVR and UDM-Pro to:- UNVR firmware to 1.3.15 or newer.- UDM-Pro firmware to 1.8.0 or newer.

Vulnerability class: Broken Authentication

Published 2020-11-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.013 (68.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Ui Unifi Protect Firmware
Unifi Protect — versions UniFi Protect v1.14.10 and earlier not fixed

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

community.ui.com/releases/UniFi-Protect-1-14-11/928e6fac-afeb-49c2-93a5-1b3066b… (Release Notes, Vendor Advisory)
community.ui.com/releases/UniFi-Protect-NVR-Firmware-1-3-15/c2a783a6-c996-43d9-… (Patch, Vendor Advisory)
community.ui.com/releases/UniFi-Dream-Machine-Firmware-1-8-0/deabc255-a081-49ba… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2020-8267?: CVE-2020-8267 is a medium-severity vulnerability in Ui Unifi Protect Firmware, classified under Improper Authentication. CVSS score: 5.3/10. Published 2020-11-05.
How severe is CVE-2020-8267?: Medium severity. CVSS v3 base score is 5.3 out of 10.