# CVE-2026-41925: WDR201A WiFi Extender OS Command Injection via adm.cgi (reboot_time)

> Unauthenticated attackers can execute arbitrary shell commands on the WDR201A WiFi Extender by injecting malicious input into the reboot_time parameter.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 May 2026
- **Updated:** 11 May 2026
- **Also known as:** GHSA-rcvc-m8x7-hg25

## What is CVE-2026-41925?

CVE-2026-41925 is a critical command injection vulnerability in Shenzhen Yipu Commercial and Trading Co., Ltd WDR201A WiFi Extender, published on 4 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the adm.cgi binary's reboot_time function that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the reboot_time POST parameter. Attackers can send a crafted request with shell metacharacters in the reboot_time parameter when reboot_enabled=1 to achieve remote code execution.

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

## Which versions are affected by CVE-2026-41925?


## How do I fix CVE-2026-41925?

No fix has been published for CVE-2026-41925 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-41925 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41925 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-41925 and fix it if it is affected.

What it is: CVE-2026-41925 is a critical command injection vulnerability in Shenzhen Yipu Commercial and Trading Co., Ltd WDR201A WiFi Extender, published on 4 May 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-2026-41925 exists.

Affected product: Shenzhen Yipu Commercial and Trading Co., Ltd WDR201A WiFi Extender. 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-2026-41925/ (Markdown: https://insights.sbomify.com/CVE-2026-41925/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-41925
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41925
- OSV: https://osv.dev/vulnerability/CVE-2026-41925

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-41925/
Summaries are generated and may contain mistakes; the official description above is the record.