# CVE-2026-21633: Auth bypass in UniFi Protect Application

> An attacker on the adjacent network can bypass authentication to gain unauthorized access to UniFi Protect cameras via a discovery protocol flaw.

- **Severity:** High 8.8 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jan 2026
- **Updated:** 5 Jan 2026
- **Also known as:** GHSA-pfqp-rqxp-h6v6

## What is CVE-2026-21633?

CVE-2026-21633 is a high-severity authentication bypass vulnerability in Ubiquiti Inc UniFi Protect Application, published on 5 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A malicious actor with access to the adjacent network could obtain unauthorized access to a UniFi Protect Camera by exploiting a discovery protocol vulnerability in the Unifi Protect Application (Version 6.1.79 and earlier).

 

Affected Products:

UniFi Protect Application (Version 6.1.79 and earlier).

 

Mitigation:

Update your UniFi Protect Application to Version 6.2.72 or later.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-21633?

It affects 1 product.


Products: Ui Unifi Protect.

## How do I fix CVE-2026-21633?

No fix has been published for CVE-2026-21633 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-21633 being exploited?

There is no known exploitation of CVE-2026-21633 in the wild and no public exploit code.

## Other vulnerabilities in Ubiquiti Inc UniFi Protect Application

- [CVE-2026-55115](https://insights.sbomify.com/CVE-2026-55115/): Server-side request forgery in UniFi Protect Application (critical 9.9)
- [CVE-2021-22943](https://insights.sbomify.com/CVE-2021-22943/): A vulnerability found in UniFi Protect application V1.18.1 and earlier permits a malicious actor who has already gained access to a network (critical 9.6)
- [CVE-2026-56841](https://insights.sbomify.com/CVE-2026-56841/): SQL injection in UniFi Protect Application (high 8.8)
- [CVE-2021-22957](https://insights.sbomify.com/CVE-2021-22957/): Cross-site request forgery in UniFi Protect application (high 8.8)
- [CVE-2026-54407](https://insights.sbomify.com/CVE-2026-54407/): Auth bypass in UniFi Protect Application (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-21633 and fix it if it is affected.

What it is: CVE-2026-21633 is a high-severity authentication bypass vulnerability in Ubiquiti Inc UniFi Protect Application, published on 5 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-21633 in the wild and no public exploit code.

Affected product: Ubiquiti Inc UniFi Protect Application. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-21633/ (Markdown: https://insights.sbomify.com/CVE-2026-21633/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-21633
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-21633
- OSV: https://osv.dev/vulnerability/CVE-2026-21633

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-21633/
Summaries are generated and may contain mistakes; the official description above is the record.