# CVE-2023-26613: Command injection in n/a

> Unauthorized attackers can execute arbitrary OS commands on D-Link DIR-823G routers via a crafted GET request.

- **Severity:** Critical 9.8 (`CVSS:3.1/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:** 29 Jun 2023
- **Updated:** 27 Nov 2024
- **Also known as:** GHSA-q87q-232w-6fjc

## What is CVE-2023-26613?

CVE-2023-26613 is a critical command injection vulnerability in Dlink Dir-823g Firmware, published on 29 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An OS command injection vulnerability in D-Link DIR-823G firmware version 1.02B05 allows unauthorized attackers to execute arbitrary operating system commands via a crafted GET request to EXCU_SHELL.

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

## Which versions are affected by CVE-2023-26613?

It affects 1 product.


Products: Dlink Dir-823g Firmware.

## How do I fix CVE-2023-26613?

No fix has been published for CVE-2023-26613 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-26613 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-26613 exists.

## Other vulnerabilities in Dlink Dir-823g Firmware

- [CVE-2023-43235](https://insights.sbomify.com/CVE-2023-43235/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-43241](https://insights.sbomify.com/CVE-2023-43241/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-26612](https://insights.sbomify.com/CVE-2023-26612/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-26616](https://insights.sbomify.com/CVE-2023-26616/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-29665](https://insights.sbomify.com/CVE-2023-29665/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-26613 and fix it if it is affected.

What it is: CVE-2023-26613 is a critical command injection vulnerability in Dlink Dir-823g Firmware, published on 29 Jun 2023. 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-2023-26613 exists.

Affected product: Dlink Dir-823g Firmware. 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-2023-26613/ (Markdown: https://insights.sbomify.com/CVE-2023-26613/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-26613
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-26613
- OSV: https://osv.dev/vulnerability/CVE-2023-26613

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-26613/
Summaries are generated and may contain mistakes; the official description above is the record.