# CVE-2026-7833: EFM ipTIME C200 ApplyRestore Endpoint iux_set.cgi sub_408F90 command injection

> Remote attackers can execute arbitrary commands on EFM ipTIME C200 routers via the ApplyRestore endpoint, requiring immediate mitigation due to public exploit availability.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 May 2026
- **Updated:** 6 May 2026
- **Also known as:** GHSA-m3xj-gqh8-33xm

## What is CVE-2026-7833?

CVE-2026-7833 is a high-severity command injection vulnerability in EFM ipTIME C200, published on 5 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A weakness has been identified in EFM ipTIME C200 up to 1.092. This vulnerability affects the function sub_408F90 of the file /cgi/iux_set.cgi of the component ApplyRestore Endpoint. This manipulation of the argument RestoreFile causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

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-2026-7833?


## How do I fix CVE-2026-7833?

No fix has been published for CVE-2026-7833 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7833 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7833 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7833 and fix it if it is affected.

What it is: CVE-2026-7833 is a high-severity command injection vulnerability in EFM ipTIME C200, published on 5 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7833 exists.

Affected product: EFM ipTIME C200. 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-2026-7833/ (Markdown: https://insights.sbomify.com/CVE-2026-7833/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7833
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7833
- OSV: https://osv.dev/vulnerability/CVE-2026-7833

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7833/
Summaries are generated and may contain mistakes; the official description above is the record.