# CVE-2026-7152: Totolink A8000RU CGI cstecgi.cgi setTelnetCfg os command injection

> Remote attackers can execute arbitrary OS commands on Totolink A8000RU routers via the setTelnetCfg function in cstecgi.cgi.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Apr 2026
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-6868-6xmq-xc2p

## What is CVE-2026-7152?

CVE-2026-7152 is a critical command injection vulnerability in Totolink A8000RU, published on 27 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setTelnetCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument telnet_enabled leads to os command injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-7152?


## How do I fix CVE-2026-7152?

No fix has been published for CVE-2026-7152 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7152 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7152 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7152 and fix it if it is affected.

What it is: CVE-2026-7152 is a critical command injection vulnerability in Totolink A8000RU, published on 27 Apr 2026. 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-2026-7152 exists.

Affected product: Totolink A8000RU. 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-2026-7152/ (Markdown: https://insights.sbomify.com/CVE-2026-7152/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7152
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7152
- OSV: https://osv.dev/vulnerability/CVE-2026-7152

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7152/
Summaries are generated and may contain mistakes; the official description above is the record.