# CVE-2018-16333: Memory corruption in n/a

> A buffer overflow in the Tenda router web server allows remote attackers to execute arbitrary code via a crafted POST request.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Sep 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-3mg9-cvj8-qmx7

## What is CVE-2018-16333?

CVE-2018-16333 is a high-severity memory corruption vulnerability in n/a, published on 2 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered on Tenda AC7 V15.03.06.44_CN, AC9 V15.03.05.19(6318)_CN, AC10 V15.03.06.23_CN, AC15 V15.03.05.19_CN, and AC18 V15.03.05.19(6318)_CN devices. There is a buffer overflow vulnerability in the router's web server. While processing the ssid parameter for a POST request, the value is directly used in a sprintf call to a local variable placed on the stack, which overrides the return address of the function, causing a buffer overflow.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2018-16333?

It affects 5 products.


Products: Tendacn Ac10 Firmware, Tendacn Ac15 Firmware, Tendacn Ac18 Firmware, Tendacn Ac7 Firmware, Tendacn Ac9 Firmware.

## How do I fix CVE-2018-16333?

No fix has been published for CVE-2018-16333 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-16333 being exploited?

There is no known exploitation of CVE-2018-16333 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-37144](https://insights.sbomify.com/CVE-2023-37144/): Command injection in n/a (critical 9.8)
- [CVE-2021-38278](https://insights.sbomify.com/CVE-2021-38278/): Memory corruption in n/a (critical 9.8)
- [CVE-2018-16334](https://insights.sbomify.com/CVE-2018-16334/): Command injection in n/a (high 8.8)
- [CVE-2021-38772](https://insights.sbomify.com/CVE-2021-38772/): Memory corruption in n/a (high 7.5)
- [CVE-2022-26243](https://insights.sbomify.com/CVE-2022-26243/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-16333 and fix it if it is affected.

What it is: CVE-2018-16333 is a high-severity memory corruption vulnerability in n/a, published on 2 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-16333 in the wild and no public exploit code.

Affected product: n/a. 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-2018-16333/ (Markdown: https://insights.sbomify.com/CVE-2018-16333/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-16333
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-16333
- OSV: https://osv.dev/vulnerability/CVE-2018-16333

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-16333/
Summaries are generated and may contain mistakes; the official description above is the record.