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CriticalVulnerabilityCVE-2026-10135updated 25 Oct 2026, 15:22 UTC

TOTOLINK X2000R router can run attacker commands via batch upgrade feature

A flaw in the router's batch firmware upgrade feature lets someone send a specially crafted web request that makes the device run commands they choose. Someone with a login to the router could take control of it.

Official, 2 sources
SeverityCriticalCVSS 9.1 of 10
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official, 2 sourcesBacked by an official source

How the attack works simplified

  1. 1Attacker logs inNeeds valid authenticated access to the device
  2. 2Crafted HTTP requestSent to the batchupg function
  3. 3Command injectedInput reaches the OS shell unsanitized
  4. 4Code executesCommands run with device privileges
  5. ResultAttacker controls the router

What happened

An OS command injection vulnerability in the batchupg functionality of the TOTOLINK X2000R router allows arbitrary code execution via a crafted HTTP request sent by an authenticated user.

Why it is dangerous: An attacker who controls the router could run arbitrary code on it, potentially intercepting or redirecting traffic for everyone on the network behind it.

Are you affected?

You are affected if you run TOTOLINK X2000R with firmware TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 and the device's web management interface is reachable by an attacker, including through an account they can authenticate with.

TOTOLINK X2000R, firmware TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327

What to do

  1. Check the TOTOLINK website or your device's admin page for a newer firmware version and install it if available
  2. Restrict access to the router's web admin interface so it is not reachable from the internet
  3. Change default or weak admin passwords and limit who holds admin accounts

Timeline

  1. 20 Oct 2026, 21:17 UTC
    Publicly disclosed
  2. 20 Oct 2026, 21:17 UTC
    Reported by NVD · NVD
  3. 25 Oct 2026, 15:22 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-10135 · GHSA-pgr5-4w5f-pfm6
CVSS
9.1 / 10
EPSS
1.4% chance of exploitation within 30 days
Disclosed
20 Oct 2026, 21:17 UTC
On Zero Radar
before the radar started
Last change
25 Oct 2026, 15:22 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

TOTOLINK X2000R router can run attacker commands via batch upgrade feature · Zero Radar