# CVE-2019-1897: Cisco RV110W, RV130W, and RV215W Routers Denial of Service Vulnerability

> Unauthenticated attackers can disconnect guest network clients on Cisco RV routers by accessing a specific URL without proper authorization checks.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Jun 2019
- **Updated:** 19 Nov 2024
- **Also known as:** GHSA-hg39-x987-h4q6

## What is CVE-2019-1897?

CVE-2019-1897 is a medium-severity missing authorization vulnerability in Cisco Rv110w Firmware, published on 20 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the web-based management interface of Cisco RV110W, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to disconnect clients that are connected to the guest network on an affected router. The vulnerability is due to improper authorization of an HTTP request. An attacker could exploit this vulnerability by accessing the URL for device disconnection and providing the connected device information. A successful exploit could allow the attacker to deny service to specific clients that are connected to the guest network.

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2019-1897?

It affects 3 products.


Products: Cisco Rv110w Firmware, Cisco Rv130w Firmware, Cisco Rv215w Firmware.

## How do I fix CVE-2019-1897?

No fix has been published for CVE-2019-1897 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-1897 being exploited?

There is no known exploitation of CVE-2019-1897 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Rv110w Firmware

- [CVE-2022-20825](https://insights.sbomify.com/CVE-2022-20825/): Command injection in Cisco Small Business RV Series Router Firmware (critical 9.8)
- [CVE-2021-1459](https://insights.sbomify.com/CVE-2021-1459/): Command injection in Cisco Small Business RV Series Router Firmware (critical 9.8)
- [CVE-2020-3144](https://insights.sbomify.com/CVE-2020-3144/): Cisco RV110W, RV130, RV130W, and RV215W Routers Authentication Bypass Vulnerability (critical 9.8)
- [CVE-2019-1663](https://insights.sbomify.com/CVE-2019-1663/): Cisco RV110W, RV130W, and RV215W Routers Management Interface Remote Command Execution Vulnerability (critical 9.8)
- [CVE-2018-0425](https://insights.sbomify.com/CVE-2018-0425/): Cisco RV110W, RV130W, and RV215W Routers Management Interface Information Disclosure Vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-1897 and fix it if it is affected.

What it is: CVE-2019-1897 is a medium-severity missing authorization vulnerability in Cisco Rv110w Firmware, published on 20 Jun 2019. 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-2019-1897 in the wild and no public exploit code.

Affected product: Cisco Rv110w 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-2019-1897/ (Markdown: https://insights.sbomify.com/CVE-2019-1897/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1897
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1897
- OSV: https://osv.dev/vulnerability/CVE-2019-1897

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-1897/
Summaries are generated and may contain mistakes; the official description above is the record.