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CriticalVulnerabilityCVE-2026-33568updated 25 Oct 2026, 15:22 UTC

TOTOLINK X2000R router can run attacker commands via device-deletion request

A specially crafted web request sent to this router can make it run commands chosen by an attacker, which could let them take full control of the device. The attacker must first be logged in to the router.

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 router
  2. 2Crafted HTTP requestSent to the boa web server's device-delete handler
  3. 3Command injectionmacstr value passed unsanitized to the OS shell
  4. 4Code executionAttacker commands run on the router
  5. ResultAttacker controls the router

What happened

An OS command injection flaw in the boa web server's formMapDelDevice handler, through the macstr parameter, allows arbitrary code execution on the TOTOLINK X2000R router firmware.

Why it is dangerous: An attacker who controls the router can intercept or redirect network traffic, reach other devices on the home or office network, and persistently compromise the network. Anyone running this router firmware is at risk.

Are you affected?

You are affected if you run TOTOLINK X2000R with firmware TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327, and its web management interface is reachable by someone who can log in.

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

What to do

  1. Check the firmware version in the router's admin page and see whether TOTOLINK has released an update for X2000R
  2. Install the vendor's fixed firmware as soon as it is available
  3. Restrict access to the router's web admin interface to trusted devices and disable remote management from the internet
  4. Change the admin password to a strong unique one until the fix is installed

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-2026-33568 · GHSA-xvh3-9jpw-qq2w
CVSS
9.1 / 10
EPSS
1.0% 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 device-deletion request · Zero Radar