# CVE-2020-19319: Memory corruption in n/a

> A buffer overflow in the login FILECODE parameter allows attackers to execute arbitrary code on D-Link 619L routers.

- **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:** 11 Sep 2023
- **Updated:** 26 Sep 2024
- **Also known as:** GHSA-6xjg-4c9c-v748

## What is CVE-2020-19319?

CVE-2020-19319 is a critical memory corruption vulnerability in Dlink Dir-619l Firmware, published on 11 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Buffer overflow vulnerability in DLINK 619L version B 2.06beta via the FILECODE parameter on login.

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

## Which versions are affected by CVE-2020-19319?

It affects 1 product.


Products: Dlink Dir-619l Firmware.

## How do I fix CVE-2020-19319?

No fix has been published for CVE-2020-19319 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-19319 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-19319 exists.

## Other vulnerabilities in Dlink Dir-619l Firmware

- [CVE-2025-55599](https://insights.sbomify.com/CVE-2025-55599/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-55602](https://insights.sbomify.com/CVE-2025-55602/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-55611](https://insights.sbomify.com/CVE-2025-55611/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-43869](https://insights.sbomify.com/CVE-2023-43869/): Memory corruption in n/a (critical 9.8)
- [CVE-2020-19320](https://insights.sbomify.com/CVE-2020-19320/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-19319 and fix it if it is affected.

What it is: CVE-2020-19319 is a critical memory corruption vulnerability in Dlink Dir-619l Firmware, published on 11 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-19319 exists.

Affected product: Dlink Dir-619l 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-2020-19319/ (Markdown: https://insights.sbomify.com/CVE-2020-19319/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-19319
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-19319
- OSV: https://osv.dev/vulnerability/CVE-2020-19319

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-19319/
Summaries are generated and may contain mistakes; the official description above is the record.