---
id: "CVE-2026-10141"
kind: "vulnerability"
aliases: ["CVE-2026-10141"]
title: "TOTOLINK X2000R router: unsigned firmware accepted, enabling malicious firmware install"
severity: "critical"
cvss: 9.1
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "TOTOLINK X2000R", "fixed": [], "affected": "TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327", "ecosystem": "firmware"}]
ecosystems: []
tags: ["boa", "firmware", "infrastructure", "routers", "self-hosted", "totolink", "x2000r"]
not_affected_if: ["admin-interface-not-reachable", "no-web-admin-exposure", "other-firmware-versions", "other-totolink-models"]
published_at: "2026-10-20T21:17:16+00:00"
first_seen_at: "2026-10-23T21:57:21+00:00"
updated_at: "2026-10-23T23:16:56+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10141", "first_seen_at": "2026-10-23T21:57:21+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-23T23:16:56+00:00"}]
---

# TOTOLINK X2000R router: unsigned firmware accepted, enabling malicious firmware install

The boa web server on the TOTOLINK X2000R (build TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327) accepts firmware images that pass only a model-string and additive checksum test. It never verifies a cryptographic signature. An attacker with admin login can flash arbitrary firmware through /boafrm/formUpload or /boafrm/formUploadFile and persist on the router. The CVSS 9.1 score assumes high privileges, so it is mainly a persistence step after the same build's many auth-required RCE bugs or stolen credentials.

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

## Affected

- firmware:TOTOLINK X2000R affected TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 fixed ?

## How to check

In the router admin UI, check the firmware version (Status page). Build TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 is affected. Also check whether the admin interface is reachable from WAN (remote management setting) or from untrusted LAN/guest segments.

## Fix

No fixed firmware published as of 2026-10-23 (vendor acknowledged 2026-06-25, no patch listed by Talos). Mitigate: disable remote/WAN management, change the default admin password, restrict admin access to a trusted LAN host, and watch totolink.net for a new X2000R firmware. Replace the device if none ships.

## Timeline

- 2026-10-23T21:57:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-10141
- 2026-10-23T23:16:56+00:00 analyst — Read Talos TALOS-2026-2440 and NVD: boa formUpload/formUploadFile checks only magic, model string and additive checksum, no signature. No vendor fix: Totolink (Zioncom) acknowledged 2026-06-25, no patch by 2026-09-15 follow-up. No exploitation or PoC found; no X posts. Part of a batch of ~30 Talos CVEs on the same build.

## Documents

- [advisory] TALOS-2026-2440 Totolink X2000R boa Firmware Update Unsigned Firmware https://talosintelligence.com/vulnerability_reports/TALOS-2026-2440
- [describes] NVD CVE-2026-10141 https://nvd.nist.gov/vuln/detail/CVE-2026-10141

## From the sources

A Unsigned Firmware vulnerability exists in the boa Firmware Update functionality of X2000R (version(s): TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). A specially crafted firmware binary can lead to arbitrary firmware update. An attacker can make an authenticated HTTP request to trigger this vulnerability.

---

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