# CVE-2020-19323: Memory corruption in n/a

> Remote attackers can cause a denial of service on D-Link DIR-619L routers via a heap buffer overflow in the mini_upnpd service.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-xfjx-x547-fx7v

## What is CVE-2020-19323?

CVE-2020-19323 is a high-severity 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

An issue was discovered in /bin/mini_upnpd on D-Link DIR-619L 2.06beta devices. There is a heap buffer overflow allowing remote attackers to restart router via the M-search request ST parameter. No authentication required

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2020-19323?

It affects 1 product.


Products: Dlink Dir-619l Firmware.

## How do I fix CVE-2020-19323?

No fix has been published for CVE-2020-19323 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-19323 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-19323 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-2020-19319](https://insights.sbomify.com/CVE-2020-19319/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-19323 and fix it if it is affected.

What it is: CVE-2020-19323 is a high-severity 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-2020-19323 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-2020-19323/ (Markdown: https://insights.sbomify.com/CVE-2020-19323/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-19323
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-19323
- OSV: https://osv.dev/vulnerability/CVE-2020-19323

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-19323/
Summaries are generated and may contain mistakes; the official description above is the record.