---
id: "CVE-2026-10135"
kind: "vulnerability"
aliases: ["CVE-2026-10135"]
title: "TOTOLINK X2000R router: batchupg flaw lets an authenticated user run commands"
severity: "critical"
cvss: 9.1
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "X2000R", "fixed": [], "affected": "TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327", "ecosystem": "firmware"}]
ecosystems: []
tags: ["infrastructure", "router", "self-hosted", "totolink", "x2000r"]
not_affected_if: ["auth-required", "no-web-admin-exposure", "other-firmware-versions", "wan-admin-disabled"]
published_at: "2026-10-20T21:17:16+00:00"
first_seen_at: "2026-10-23T21:57:21+00:00"
updated_at: "2026-10-23T23:18:06+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10135", "first_seen_at": "2026-10-23T21:57:21+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-23T23:18:06+00:00"}]
---

# TOTOLINK X2000R router: batchupg flaw lets an authenticated user run commands

TOTOLINK X2000R firmware B20250421.1327 has an OS command injection in batchupg. A logged-in admin can upload a file with a crafted filename (/boafrm/formUploadFile), trigger /boafrm/formBuploadSetting, and the filename reaches system() unsanitised, giving command execution as the router. Found by Cisco Talos. The vendor acknowledged the report in June 2026 but no fixed firmware is published.

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

## Affected

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

## How to check

In the router web UI (Status/Upgrade page) read the firmware version; TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 is confirmed vulnerable. Other builds are untested. Also check whether the web admin is reachable from the WAN side.

## Fix

No fixed version published as of 2026-10-23 (Talos lists no patch). Mitigate: turn off remote/WAN web administration, restrict admin to a trusted LAN, change default credentials, and watch totolink.net for new X2000R firmware.

## Timeline

- 2026-10-23T21:57:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-10135
- 2026-10-23T23:18:06+00:00 analyst — Read Talos TALOS-2026-2435: authenticated OS command injection (CWE-78) via uploaded filename reaching system() in batchupg; vendor acked 2026-06-25, no patch or fixed version published; no exploitation seen, no public PoC (partial UDP snippet only), no social chatter.

## Documents

- [advisory] TALOS-2026-2435 Totolink X2000R batchupg OS command injection https://talosintelligence.com/vulnerability_reports/TALOS-2026-2435

## From the sources

A OS command injection vulnerability exists in the batchupg functionality of X2000R (version(s): TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). A specially crafted HTTP request can lead to arbitrary code execution. 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_