# CVE-2020-1825: Denial of service in FusionAccess

> Attackers can cause denial of service in FusionAccess by sending crafted messages from the same network due to insufficient input validation.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Jun 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-9fxg-j66g-hxgc

## What is CVE-2020-1825?

CVE-2020-1825 is a medium-severity denial of service vulnerability in FusionAccess, published on 15 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

FusionAccess with versions earlier than 6.5.1.SPC002 have a Denial of Service (DoS) vulnerability. Due to insufficient verification on specific input, attackers can exploit this vulnerability by sending constructed messages to the affected device through another device on the same network. Successful exploit could cause affected devices to be abnormal.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2020-1825?

It affects 1 product.


Products: Huawei Fusionaccess.

## How do I fix CVE-2020-1825?

No fix has been published for CVE-2020-1825 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-1825 being exploited?

There is no known exploitation of CVE-2020-1825 in the wild and no public exploit code.

## Other vulnerabilities in FusionAccess

- [CVE-2020-9090](https://insights.sbomify.com/CVE-2020-9090/): Missing authorization in FusionAccess (high 7.8)
- [CVE-2015-7844](https://insights.sbomify.com/CVE-2015-7844/): Denial of service in FusionAccess V100R005C10,V100R005C20 (high 7.5)
- [CVE-2016-8779](https://insights.sbomify.com/CVE-2016-8779/): Other in FusionAccess FusionAccess V100R005C10, FusionAccess V100R005C20 (medium 6.5)
- [CVE-2016-6839](https://insights.sbomify.com/CVE-2016-6839/): Other in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-1825 and fix it if it is affected.

What it is: CVE-2020-1825 is a medium-severity denial of service vulnerability in FusionAccess, published on 15 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-1825 in the wild and no public exploit code.

Affected product: FusionAccess. 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-2020-1825/ (Markdown: https://insights.sbomify.com/CVE-2020-1825/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-1825
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-1825
- OSV: https://osv.dev/vulnerability/CVE-2020-1825

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-1825/
Summaries are generated and may contain mistakes; the official description above is the record.