# CVE-2026-1125: D-Link DIR-823X set_wifidog_settings sub_412E7C command injection

> Remote attackers can execute arbitrary commands on D-Link DIR-823X routers via the set_wifidog_settings interface.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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:** 18 Jan 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-8whh-2x7g-j9cx

## What is CVE-2026-1125?

CVE-2026-1125 is a medium-severity command injection vulnerability in D-Link DIR-823X, published on 18 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A weakness has been identified in D-Link DIR-823X 250416. Affected by this issue is the function sub_412E7C of the file /goform/set_wifidog_settings. Executing a manipulation of the argument wd_enable can lead to command injection. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.

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-2026-1125?

It affects 1 product.


Products: Dlink Dir-823x Firmware.

## How do I fix CVE-2026-1125?

No fix has been published for CVE-2026-1125 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1125 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1125 exists.

## Other vulnerabilities in D-Link DIR-823X

- [CVE-2025-29635](https://insights.sbomify.com/CVE-2025-29635/): D-Link DIR-823X Command Injection (high 7.2, exploited in the wild)
- [CVE-2025-29040](https://insights.sbomify.com/CVE-2025-29040/): Command injection in n/a (critical 9.8)
- [CVE-2025-29041](https://insights.sbomify.com/CVE-2025-29041/): Command injection in n/a (critical 9.8)
- [CVE-2025-29042](https://insights.sbomify.com/CVE-2025-29042/): Command injection in n/a (critical 9.8)
- [CVE-2025-29043](https://insights.sbomify.com/CVE-2025-29043/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1125 and fix it if it is affected.

What it is: CVE-2026-1125 is a medium-severity command injection vulnerability in D-Link DIR-823X, published on 18 Jan 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-2026-1125 exists.

Affected product: D-Link DIR-823X. 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-2026-1125/ (Markdown: https://insights.sbomify.com/CVE-2026-1125/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1125
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1125
- OSV: https://osv.dev/vulnerability/CVE-2026-1125

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-1125/
Summaries are generated and may contain mistakes; the official description above is the record.