# CVE-2021-35532: Firmware upload verification bypass in TXpert Hub CoreTec 4

> An attacker with sufficient privileges can bypass firmware upload validation to install malicious firmware on Hitachi Energy TXpert Hub CoreTec 4 devices.

- **Severity:** Medium 6.7 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Jun 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-c4j3-6346-fqqx

## What is CVE-2021-35532?

CVE-2021-35532 is a medium-severity vulnerability in Hitachi Energy TXpert Hub CoreTec 4 version, published on 7 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability exists in the file upload validation part of Hitachi Energy TXpert Hub CoreTec 4 product. The vulnerability allows an attacker or malicious agent who manages to gain access to the system and obtain an account with sufficient privilege to upload a malicious firmware to the product. This issue affects: Hitachi Energy TXpert Hub CoreTec 4 version 2.0.0; 2.0.1; 2.1.0; 2.1.1; 2.1.2; 2.1.3; 2.2.0; 2.2.1.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-494 (Download of Code Without Integrity Check)

## Which versions are affected by CVE-2021-35532?

It affects 1 product.


Products: Hitachienergy Txpert Hub Coretec 4 Firmware.

## How do I fix CVE-2021-35532?

No fix has been published for CVE-2021-35532 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-35532 being exploited?

There is no known exploitation of CVE-2021-35532 in the wild and no public exploit code.

## Other vulnerabilities in Hitachi Energy TXpert Hub CoreTec 4 version

- [CVE-2021-35531](https://insights.sbomify.com/CVE-2021-35531/): Remote Code Execution in TXpert Hub CoreTec 4 (medium 6.7)
- [CVE-2021-35530](https://insights.sbomify.com/CVE-2021-35530/): User authentication bypass in TXpert Hub CoreTec 4 (medium 6.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-35532 and fix it if it is affected.

What it is: CVE-2021-35532 is a medium-severity vulnerability in Hitachi Energy TXpert Hub CoreTec 4 version, published on 7 Jun 2022. 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-2021-35532 in the wild and no public exploit code.

Affected product: Hitachi Energy TXpert Hub CoreTec 4 version. 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-2021-35532/ (Markdown: https://insights.sbomify.com/CVE-2021-35532/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-35532
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-35532
- OSV: https://osv.dev/vulnerability/CVE-2021-35532

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-35532/
Summaries are generated and may contain mistakes; the official description above is the record.