# CVE-2020-15916: Command injection in n/a

> Remote attackers can execute arbitrary system commands on Tenda AC15 routers via shell metacharacters in the lanIp parameter.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 23 Jul 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-78c7-w9g8-rxrh

## What is CVE-2020-15916?

CVE-2020-15916 is a critical command injection vulnerability in Tenda Ac15 Firmware, published on 23 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

goform/AdvSetLanip endpoint on Tenda AC15 AC1900 15.03.05.19 devices allows remote attackers to execute arbitrary system commands via shell metacharacters in the lanIp POST parameter.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2020-15916?

It affects 1 product.


Products: Tenda Ac15 Firmware.

## How do I fix CVE-2020-15916?

No fix has been published for CVE-2020-15916 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-15916 being exploited?

There is no known exploitation of CVE-2020-15916 in the wild and no public exploit code.

Public exploit code:

- This project is a PoC for exploiting CVE-2020-15916, a vulnerability that allows unauthorized changes to the LAN configuration of a device (github_poc): https://github.com/geniuszly/CVE-2020-15916

## Other vulnerabilities in Tenda Ac15 Firmware

- [CVE-2020-10987](https://insights.sbomify.com/CVE-2020-10987/): Tenda AC1900 Router AC15 Model Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2026-24103](https://insights.sbomify.com/CVE-2026-24103/): Memory corruption in n/a (critical 9.8)
- [CVE-2026-24101](https://insights.sbomify.com/CVE-2026-24101/): Command injection in n/a (critical 9.8)
- [CVE-2026-24105](https://insights.sbomify.com/CVE-2026-24105/): Command injection in n/a (critical 9.8)
- [CVE-2025-63666](https://insights.sbomify.com/CVE-2025-63666/): Information disclosure in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-15916 and fix it if it is affected.

What it is: CVE-2020-15916 is a critical command injection vulnerability in Tenda Ac15 Firmware, published on 23 Jul 2020. 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-2020-15916 in the wild and no public exploit code.

Affected product: Tenda Ac15 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-2020-15916/ (Markdown: https://insights.sbomify.com/CVE-2020-15916/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-15916
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-15916
- OSV: https://osv.dev/vulnerability/CVE-2020-15916

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-15916/
Summaries are generated and may contain mistakes; the official description above is the record.