# CVE-2018-8826: Code injection in n/a

> Remote attackers can execute arbitrary code on vulnerable ASUS RT-series routers via unspecified vectors, requiring firmware updates.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Apr 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-87g7-g8rw-gjv7

## What is CVE-2018-8826?

CVE-2018-8826 is a critical code injection vulnerability in n/a, published on 20 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

ASUS RT-AC51U, RT-AC58U, RT-AC66U, RT-AC1750, RT-ACRH13, and RT-N12 D1 routers with firmware before 3.0.0.4.380.8228; RT-AC52U B1, RT-AC1200 and RT-N600 routers with firmware before 3.0.0.4.380.10446; RT-AC55U and RT-AC55UHP routers with firmware before 3.0.0.4.382.50276; RT-AC86U and RT-AC2900 routers with firmware before 3.0.0.4.384.20648; and possibly other RT-series routers allow remote attackers to execute arbitrary code via unspecified vectors.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-8826?

It affects 13 products.


Products: Asus Rt-Ac1200 Firmware, Asus Rt-Ac1750 Firmware, Asus Rt-Ac2900 Firmware, Asus Rt-Ac51u Firmware, Asus Rt-Ac52u B1 Firmware, Asus Rt-Ac55u Firmware, Asus Rt-Ac55uhp Firmware, Asus Rt-Ac58u Firmware, Asus Rt-Ac66u Firmware, Asus Rt-Ac86u Firmware, Asus Rt-Acrh13 Firmware, Asus Rt-N12 D1 Firmware, Asus Rt-N600 Firmware.

## How do I fix CVE-2018-8826?

No fix has been published for CVE-2018-8826 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-8826 being exploited?

There is no known exploitation of CVE-2018-8826 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-8826 and fix it if it is affected.

What it is: CVE-2018-8826 is a critical code injection vulnerability in n/a, published on 20 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-8826 in the wild and no public exploit code.

Affected product: n/a. 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-2018-8826/ (Markdown: https://insights.sbomify.com/CVE-2018-8826/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-8826
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-8826
- OSV: https://osv.dev/vulnerability/CVE-2018-8826

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-8826/
Summaries are generated and may contain mistakes; the official description above is the record.