---
id: "CVE-2026-116505"
kind: "vulnerability"
aliases: ["CVE-2026-116505"]
title: "TOTOLINK A950RG router: MAC address input enables remote command injection"
severity: "critical"
cvss: 9.1
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["firmware", "infrastructure", "router", "self-hosted", "totolink"]
not_affected_if: ["different-hardware", "management-not-exposed"]
published_at: "2026-10-26T21:18:12+00:00"
first_seen_at: "2026-10-26T21:20:31+00:00"
updated_at: "2026-10-26T21:21:05+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116505", "first_seen_at": "2026-10-26T21:20:31+00:00"}]
---

# TOTOLINK A950RG router: MAC address input enables remote command injection

A flaw in the device-information handler of the TOTOLINK A950RG router lets a crafted MAC address value inject operating system commands. A remote attacker can run commands on the router with no account needed according to the advisory's remote-launch description.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the firmware version on the router admin page or with the device label; the affected build is `4.1.2cu.5268_B20221104`
- unknown

## Fix

- Update the TOTOLINK A950RG firmware to a fixed release from the vendor (version unknown)
- Until patched, restrict access to the router's management interface and disable remote administration
- unknown

## Timeline

- 2026-10-26T21:20:31+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-116505

## From the sources

A vulnerability was found in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This impacts the function getDeviceInfo of the file /var/lib/misc/udhcpd.leases of the component device-information Handler. The manipulation of the argument MAC address results in command injection. The attack can be launched remotely. The exploit has been made public and could be used.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_