# CVE-2025-1610: LB-LINK AC1900 Router set_blacklist websGetVar os command injection

> Remote attackers can execute arbitrary OS commands via the set_blacklist interface in LB-LINK AC1900 routers, posing a critical security risk.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Feb 2025
- **Updated:** 24 Feb 2025
- **Also known as:** GHSA-6fj4-vx3m-g726

## What is CVE-2025-1610?

CVE-2025-1610 is a medium-severity command injection vulnerability in LB-LINK AC1900 Router, published on 24 Feb 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was found in LB-LINK AC1900 Router 1.0.2 and classified as critical. Affected by this issue is the function websGetVar of the file /goform/set_blacklist. The manipulation of the argument mac/enable leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

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-2025-1610?

It affects 1 product.


Products: Lb-Link Ac1900 Firmware.

## How do I fix CVE-2025-1610?

No fix has been published for CVE-2025-1610 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-1610 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-1610 exists.

## Other vulnerabilities in LB-LINK AC1900 Router

- [CVE-2025-1608](https://insights.sbomify.com/CVE-2025-1608/): LB-LINK AC1900 Router set_manpwd websGetVar os command injection (medium 5.3)
- [CVE-2025-1609](https://insights.sbomify.com/CVE-2025-1609/): LB-LINK AC1900 Router set_cmd websGetVar os command injection (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-1610 and fix it if it is affected.

What it is: CVE-2025-1610 is a medium-severity command injection vulnerability in LB-LINK AC1900 Router, published on 24 Feb 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-1610 exists.

Affected product: LB-LINK AC1900 Router. 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-2025-1610/ (Markdown: https://insights.sbomify.com/CVE-2025-1610/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-1610
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-1610
- OSV: https://osv.dev/vulnerability/CVE-2025-1610

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-1610/
Summaries are generated and may contain mistakes; the official description above is the record.