# CVE-2019-15957: Cisco Small Business Routers RV016, RV042, RV042G, RV082, RV320, and RV325 Command Injection Vulnerability

> Authenticated administrators can inject arbitrary commands into Cisco Small Business Routers, executing them with root privileges on the underlying OS.

- **Severity:** High 7.2 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Sep 2020
- **Updated:** 13 Nov 2024
- **Also known as:** GHSA-9rmc-v2wh-vw8c

## What is CVE-2019-15957?

CVE-2019-15957 is a high-severity command injection vulnerability in Cisco Rv320 Firmware, published on 23 Sep 2020. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker with administrative privileges to inject arbitrary commands into the underlying operating system. When processed, the commands will be executed with root privileges. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by providing malicious input to a specific field in the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux operating system as the root user.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2019-15957?

It affects 6 products.


Products: Cisco Rv016 Multi-Wan Vpn Firmware, Cisco Rv042 Dual Wan Vpn, Cisco Rv042g Dual Gigabit Wan Vpn Firmware, Cisco Rv082 Dual Wan Vpn Router Firmware, Cisco Rv320 Firmware, Cisco Rv325 Firmware.

## How do I fix CVE-2019-15957?

No fix has been published for CVE-2019-15957 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-15957 being exploited?

There is no known exploitation of CVE-2019-15957 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Rv320 Firmware

- [CVE-2019-15271](https://insights.sbomify.com/CVE-2019-15271/): Cisco RV Series Routers Deserialization of Untrusted Data (high 8.8, exploited in the wild)
- [CVE-2019-15990](https://insights.sbomify.com/CVE-2019-15990/): Cisco Small Business Routers RV016, RV042, RV042G, and RV082 Information Disclosure Vulnerability (medium 5.3)
- [CVE-2015-6418](https://insights.sbomify.com/CVE-2015-6418/): Weak cryptography in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-15957 and fix it if it is affected.

What it is: CVE-2019-15957 is a high-severity command injection vulnerability in Cisco Rv320 Firmware, published on 23 Sep 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-15957 in the wild and no public exploit code.

Affected product: Cisco Rv320 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-2019-15957/ (Markdown: https://insights.sbomify.com/CVE-2019-15957/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-15957
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-15957
- OSV: https://osv.dev/vulnerability/CVE-2019-15957

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-15957/
Summaries are generated and may contain mistakes; the official description above is the record.