# CVE-2019-19494: Memory corruption in n/a

> Remote attackers can execute arbitrary kernel-level code on Broadcom-based cable modems via JavaScript in a victim's browser.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 9 Jan 2020
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-g2f2-5gp5-vj56

## What is CVE-2019-19494?

CVE-2019-19494 is a high-severity memory corruption vulnerability in n/a, published on 9 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Broadcom based cable modems across multiple vendors are vulnerable to a buffer overflow, which allows a remote attacker to execute arbitrary code at the kernel level via JavaScript run in a victim's browser. Examples of affected products include Sagemcom F@st 3890 prior to 50.10.21_T4, Sagemcom F@st 3890 prior to 05.76.6.3f, Sagemcom F@st 3686 3.428.0, Sagemcom F@st 3686 4.83.0, NETGEAR CG3700EMR 2.01.05, NETGEAR CG3700EMR 2.01.03, NETGEAR C6250EMR 2.01.05, NETGEAR C6250EMR 2.01.03, Technicolor TC7230 STEB 01.25, COMPAL 7284E 5.510.5.11, and COMPAL 7486E 5.510.5.11.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2019-19494?

It affects 7 products.


Products: Compal 7284e Firmware, Compal 7486e Firmware, Netgear C6250emr Firmware, Netgear Cg3700emr Firmware, Sagemcom F\@st 3686 Firmware, Sagemcom F\@st 3890 Firmware, Technicolor Tc7230 Steb Firmware.

## How do I fix CVE-2019-19494?

No fix has been published for CVE-2019-19494 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-19494 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-19494 exists.

Public exploit code:

- "Cablehaunt" Cable Modem WebSocket DoS (metasploit)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-19494 and fix it if it is affected.

What it is: CVE-2019-19494 is a high-severity memory corruption vulnerability in n/a, published on 9 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-19494 exists.

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-2019-19494/ (Markdown: https://insights.sbomify.com/CVE-2019-19494/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-19494
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-19494
- OSV: https://osv.dev/vulnerability/CVE-2019-19494

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-19494/
Summaries are generated and may contain mistakes; the official description above is the record.