# CVE-2026-1149: Totolink LR350 POST Request cstecgi.cgi setDiagnosisCfg command injection

> Remote attackers can execute arbitrary commands on Totolink LR350 routers via the setDiagnosisCfg function in cstecgi.cgi.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **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:** 19 Jan 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-m898-gr28-h7qx

## What is CVE-2026-1149?

CVE-2026-1149 is a medium-severity command injection vulnerability in Totolink LR350, published on 19 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was identified in Totolink LR350 9.3.5u.6369_B20220309. This issue affects the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument ip leads to command injection. The attack can be initiated remotely. The exploit is publicly available and might be used.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-1149?

It affects 1 product.


Products: Totolink Lr350 Firmware.

## How do I fix CVE-2026-1149?

No fix has been published for CVE-2026-1149 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1149 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1149 exists.

## Other vulnerabilities in Totolink LR350

- [CVE-2024-42967](https://insights.sbomify.com/CVE-2024-42967/): Information disclosure in n/a (critical 9.8)
- [CVE-2024-36783](https://insights.sbomify.com/CVE-2024-36783/): Command injection in n/a (critical 9.8)
- [CVE-2024-35387](https://insights.sbomify.com/CVE-2024-35387/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-35099](https://insights.sbomify.com/CVE-2024-35099/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-37145](https://insights.sbomify.com/CVE-2023-37145/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1149 and fix it if it is affected.

What it is: CVE-2026-1149 is a medium-severity command injection vulnerability in Totolink LR350, published on 19 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1149 exists.

Affected product: Totolink LR350. 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-2026-1149/ (Markdown: https://insights.sbomify.com/CVE-2026-1149/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1149
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1149
- OSV: https://osv.dev/vulnerability/CVE-2026-1149

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-1149/
Summaries are generated and may contain mistakes; the official description above is the record.