# CVE-2016-8781: Denial of service in Secospace USG6300, Secospace USG6500, Secospace USG6600 Secospace USG6300 V500R001C20 and V500R001C20SPC200PWE,Secospace USG6500 V500R001C20,Secospace USG6600 V500R001C20 and V500R001C20SPC200PWE

> Remote attackers with specific permissions can exhaust memory by sending numerous commands, causing a denial of service on Huawei Secospace USG devices.

- **Severity:** Medium 6.5 (`CVSS:3.0/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:** 2 Apr 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-rxqf-6xmp-g3cf

## What is CVE-2016-8781?

CVE-2016-8781 is a medium-severity denial of service vulnerability in Huawei Secospace Usg6300 Firmware, published on 2 Apr 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Huawei Secospace USG6300 with software V500R001C20 and V500R001C20SPC200PWE, Secospace USG6500 with software V500R001C20, Secospace USG6600 with software V500R001C20 and V500R001C20SPC200PWE allow remote attackers with specific permission to log in to a device and deliver a large number of unspecified commands to exhaust memory, causing a DoS condition.

Weakness: CWE-399

## Which versions are affected by CVE-2016-8781?

It affects 3 products.


Products: Huawei Secospace Usg6300 Firmware, Huawei Secospace Usg6500 Firmware, Huawei Secospace Usg6600 Firmware.

## How do I fix CVE-2016-8781?

No fix has been published for CVE-2016-8781 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-8781 being exploited?

There is no known exploitation of CVE-2016-8781 in the wild and no public exploit code.

## Other vulnerabilities in Huawei Secospace Usg6300 Firmware

- [CVE-2017-8174](https://insights.sbomify.com/CVE-2017-8174/): Weak cryptography in Secospace USG6300,Secospace USG6600 (high 7.5)
- [CVE-2020-9075](https://insights.sbomify.com/CVE-2020-9075/): Path traversal in Secospace USG6300;USG6300E (medium 6.5)
- [CVE-2016-8802](https://insights.sbomify.com/CVE-2016-8802/): Memory corruption in Secospace USG6300,Secospace USG6500,Secospace USG6600 Secospace USG6300 V500R001C20SPC100, V500R001C20SPC101, V500R001C20SPC200,Secospace USG6500 V500R001C20SPC100, V500R001C20SPC101, V500R001C20SPC200,Secospace USG6600 V500R001C20SPC100, V500R001C20SPC101, V500R001C20SPC200, (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-8781 and fix it if it is affected.

What it is: CVE-2016-8781 is a medium-severity denial of service vulnerability in Huawei Secospace Usg6300 Firmware, published on 2 Apr 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2016-8781 in the wild and no public exploit code.

Affected product: Huawei Secospace Usg6300 Firmware. 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-2016-8781/ (Markdown: https://insights.sbomify.com/CVE-2016-8781/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-8781
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-8781
- OSV: https://osv.dev/vulnerability/CVE-2016-8781

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-8781/
Summaries are generated and may contain mistakes; the official description above is the record.