# CVE-2020-5536: Auth bypass in OpenBlocks IoT VX2

> An attacker on the same network can bypass authentication and initialize the OpenBlocks IoT VX2 device, compromising its configuration.

- **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:** 4 Mar 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-pgw8-4v8r-q22q

## What is CVE-2020-5536?

CVE-2020-5536 is a high-severity authentication bypass vulnerability in Plat'Home Co.,Ltd. OpenBlocks IoT VX2, published on 4 Mar 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

OpenBlocks IoT VX2 prior to Ver.4.0.0 (Ver.3 Series) allows an attacker on the same network segment to bypass authentication and to initialize the device via unspecified vectors.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2020-5536?

It affects 1 product.


Products: Plathome Openblocks Iot Vx2 Firmware.

## How do I fix CVE-2020-5536?

No fix has been published for CVE-2020-5536 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-5536 being exploited?

There is no known exploitation of CVE-2020-5536 in the wild and no public exploit code.

## Other vulnerabilities in Plat'Home Co.,Ltd. OpenBlocks IoT VX2

- [CVE-2020-5535](https://insights.sbomify.com/CVE-2020-5535/): Command injection in OpenBlocks IoT VX2 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-5536 and fix it if it is affected.

What it is: CVE-2020-5536 is a high-severity authentication bypass vulnerability in Plat'Home Co.,Ltd. OpenBlocks IoT VX2, published on 4 Mar 2020. 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-2020-5536 in the wild and no public exploit code.

Affected product: Plat'Home Co.,Ltd. OpenBlocks IoT VX2. 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-2020-5536/ (Markdown: https://insights.sbomify.com/CVE-2020-5536/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-5536
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-5536
- OSV: https://osv.dev/vulnerability/CVE-2020-5536

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-5536/
Summaries are generated and may contain mistakes; the official description above is the record.