# CVE-2026-12197: Ruijie EG105G-P JSON-RPC Diagnose Endpoint diagnose nslookup command injection

> Remote attackers can execute arbitrary commands on Ruijie EG105G-P routers via the JSON-RPC diagnose endpoint.

- **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:** 14 Jun 2026
- **Updated:** 15 Jun 2026
- **Also known as:** GHSA-f7mp-cw7j-wx85

## What is CVE-2026-12197?

CVE-2026-12197 is a high-severity command injection vulnerability in Ruijie EG105G-P, published on 14 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A security flaw has been discovered in Ruijie EG105G-P 2.340. The impacted element is the function nslookup of the file /cgi-bin/luci/api/diagnose of the component JSON-RPC Diagnose Endpoint. Performing a manipulation of the argument params.target results in command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may 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-2026-12197?


## How do I fix CVE-2026-12197?

No fix has been published for CVE-2026-12197 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12197 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-12197 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12197 and fix it if it is affected.

What it is: CVE-2026-12197 is a high-severity command injection vulnerability in Ruijie EG105G-P, published on 14 Jun 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-2026-12197 exists.

Affected product: Ruijie EG105G-P. 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-2026-12197/ (Markdown: https://insights.sbomify.com/CVE-2026-12197/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12197
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12197
- OSV: https://osv.dev/vulnerability/CVE-2026-12197

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-12197/
Summaries are generated and may contain mistakes; the official description above is the record.