# CVE-2019-13520: Memory corruption in Alpha5 Smart Loader

> Attackers can execute arbitrary code via crafted project files in Alpha5 Smart Loader due to buffer overflows.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 20 Aug 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-mcm5-cjrc-wj5f

## What is CVE-2019-13520?

CVE-2019-13520 is a high-severity memory corruption vulnerability in Alpha5 Smart Loader, published on 20 Aug 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Multiple buffer overflow issues have been identified in Alpha5 Smart Loader: All versions prior to 4.2. An attacker could use specially crafted project files to overflow the buffer and execute code under the privileges of the application.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2019-13520?

It affects 1 product.


Products: Fujielectric Alpha5 Smart Loader Firmware.

## How do I fix CVE-2019-13520?

No fix has been published for CVE-2019-13520 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-13520 being exploited?

There is no known exploitation of CVE-2019-13520 in the wild and no public exploit code.

## Other vulnerabilities in Alpha5 Smart Loader

- [CVE-2018-14794](https://insights.sbomify.com/CVE-2018-14794/): Memory corruption in Alpha5 Smart Loader (critical 9.8)
- [CVE-2022-21214](https://insights.sbomify.com/CVE-2022-21214/): ICSA-22-090-03 Fuji Electric Alpha5 (high 7.8)
- [CVE-2022-21228](https://insights.sbomify.com/CVE-2022-21228/): ICSA-22-090-03 Fuji Electric Alpha5 (high 7.8)
- [CVE-2022-24383](https://insights.sbomify.com/CVE-2022-24383/): ICSA-22-090-03 Fuji Electric Alpha5 (high 7.8)
- [CVE-2018-14788](https://insights.sbomify.com/CVE-2018-14788/): Memory corruption in Alpha5 Smart Loader (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-13520 and fix it if it is affected.

What it is: CVE-2019-13520 is a high-severity memory corruption vulnerability in Alpha5 Smart Loader, published on 20 Aug 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-13520 in the wild and no public exploit code.

Affected product: Alpha5 Smart Loader. 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-2019-13520/ (Markdown: https://insights.sbomify.com/CVE-2019-13520/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-13520
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-13520
- OSV: https://osv.dev/vulnerability/CVE-2019-13520

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-13520/
Summaries are generated and may contain mistakes; the official description above is the record.