# CVE-2024-0571: Totolink LR1200GB cstecgi.cgi setSmsCfg stack-based overflow

> Remote attackers can trigger a stack-based buffer overflow in the SMS configuration handler to execute arbitrary code on Totolink LR1200GB routers.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Jan 2024
- **Updated:** 17 Jun 2025
- **Also known as:** GHSA-664m-3qr3-jp8f

## What is CVE-2024-0571?

CVE-2024-0571 is a high-severity memory corruption vulnerability in Totolink LR1200GB, published on 16 Jan 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability, which was classified as critical, has been found in Totolink LR1200GB 9.1.0u.6619_B20230130. This issue affects the function setSmsCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument text leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-250787. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2024-0571?

It affects 1 product.


Products: Totolink Lr1200gb Firmware.

## How do I fix CVE-2024-0571?

No fix has been published for CVE-2024-0571 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-0571 being exploited?

There is no known exploitation of CVE-2024-0571 in the wild and no public exploit code.

## Other vulnerabilities in Totolink LR1200GB

- [CVE-2024-1783](https://insights.sbomify.com/CVE-2024-1783/): Totolink LR1200GB Web Interface cstecgi.cgi loginAuth stack-based overflow (critical 9.8)
- [CVE-2023-46977](https://insights.sbomify.com/CVE-2023-46977/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-0572](https://insights.sbomify.com/CVE-2024-0572/): Totolink LR1200GB cstecgi.cgi setOpModeCfg stack-based overflow (high 8.8)
- [CVE-2024-0573](https://insights.sbomify.com/CVE-2024-0573/): Totolink LR1200GB cstecgi.cgi setDiagnosisCfg stack-based overflow (high 8.8)
- [CVE-2024-0574](https://insights.sbomify.com/CVE-2024-0574/): Totolink LR1200GB cstecgi.cgi setParentalRules stack-based overflow (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-0571 and fix it if it is affected.

What it is: CVE-2024-0571 is a high-severity memory corruption vulnerability in Totolink LR1200GB, published on 16 Jan 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-0571 in the wild and no public exploit code.

Affected product: Totolink LR1200GB. 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-2024-0571/ (Markdown: https://insights.sbomify.com/CVE-2024-0571/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-0571
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-0571
- OSV: https://osv.dev/vulnerability/CVE-2024-0571

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-0571/
Summaries are generated and may contain mistakes; the official description above is the record.