# CVE-2026-110957: Wavlink WL-WN530BE2-A Login Processing api.cgi sub_12580 os command injection

> Remote attackers can execute arbitrary OS commands via the REMOTE_ADDR argument in the login processing API of Wavlink routers.

- **Severity:** Critical 10.0 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:** 15 Oct 2026
- **Updated:** 20 Oct 2026
- **Also known as:** GHSA-hcq8-q899-8h78

## What is CVE-2026-110957?

CVE-2026-110957 is a critical command injection vulnerability in Wavlink WL-WN530BE2-A, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been found in Wavlink WL-WN530BE2-A up to M30BE2_V250604. The affected element is the function sub_12580 of the file api.cgi of the component Login Processing. The manipulation of the argument REMOTE_ADDR leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2026-09-24-841a51c6d5_tclinux.bin is sufficient to fix this issue. You should upgrade the affected component. The vendor confirms: "We confirm the finding, and it has already been addressed. In the current firmware the api=info&client=app handler no longer builds a shell command: the login script is now invoked through an argument vector (execvp) instead of system(), and the client address is length-limited and null-checked."

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-110957?


## How do I fix CVE-2026-110957?

No fix has been published for CVE-2026-110957 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-110957 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110957 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-110957 and fix it if it is affected.

What it is: CVE-2026-110957 is a critical command injection vulnerability in Wavlink WL-WN530BE2-A, published on 15 Oct 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-2026-110957 exists.

Affected product: Wavlink WL-WN530BE2-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-2026-110957/ (Markdown: https://insights.sbomify.com/CVE-2026-110957/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-110957
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-110957
- OSV: https://osv.dev/vulnerability/CVE-2026-110957

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-110957/
Summaries are generated and may contain mistakes; the official description above is the record.