How do I check whether I am affected by CVE-2026-41223?

Log in to the router admin page and read the firmware version (Status/System). TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 is confirmed vulnerable; other builds are untested, so assume affected. Check whether the admin interface is reachable from WAN (remote management setting, or scan your public IP on ports 80/8080).

What is the fix for CVE-2026-41223?

No fixed firmware published as of 2026-10-23 (unknown). Check totolink.net X2000R download page for newer firmware. Until then: turn off WAN/remote administration, restrict admin access to LAN, change the admin password to a strong unique one, and replace the router if exposed and unpatched.

Who is not affected by CVE-2026-41223?

Not affected if: auth-required, other-models, wan-admin-disabled.

Live › vulnerability › CVE-2026-41223

Go to dashboard

critical9.1Infrastructure

TOTOLINK X2000R router: stack overflow in device-delete handler allows code execution

Stack buffer overflow in the TOTOLINK X2000R web interface. The formMapDelDevice handler passes the macstr POST parameter to /bin/map_del_device, which strcpy's it onto the stack. An attacker with admin login can run code on the router. Talos has a crash trace showing PC control, but no public exploit. No vendor fix has been published.

Summary written from the sources below. Check the originals before acting.

CVSS 3.x

9.1

critical

scored by [email protected]

known so far5 of 6

missing: exploitation

First public: Oct 20, 2026 UTC
Last modified: Oct 23, 2026
Status: open
Known exploitation: None reported
Public exploit: None on GitHub
EPSS: not scored

First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.

Why it is critical, and not just CVSS

Likelihood → · Impact ↓

critical

high

medium

high

medium

low

medium

low

Exploited: No reports yet.
Needs login: Yes.
Needs a special setup: Not known from the sources.
Reachable from: network.
Worst case: Attacker runs arbitrary code on the router as an authenticated user.
CVSS said: 9.1. The facts above say medium; we keep the sources' critical until an analyst looks.

Who is affected

1 product

Know the next one before it finds you.

Add to Slack

Live › vulnerability › CVE-2026-41223

Go to dashboard

critical9.1Infrastructure

TOTOLINK X2000R router: stack overflow in device-delete handler allows code execution

Summary written from the sources below. Check the originals before acting.

CVSS 3.x

9.1

critical

scored by [email protected]

known so far5 of 6

missing: exploitation

First public: Oct 20, 2026 UTC
Last modified: Oct 23, 2026
Status: open
Known exploitation: None reported
Public exploit: None on GitHub
EPSS: not scored

First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.

Why it is critical, and not just CVSS

Likelihood → · Impact ↓

critical

high

medium

high

medium

low

medium

low

Exploited: No reports yet.
Needs login: Yes.
Needs a special setup: Not known from the sources.
Reachable from: network.
Worst case: Attacker runs arbitrary code on the router as an authenticated user.
CVSS said: 9.1. The facts above say medium; we keep the sources' critical until an analyst looks.

Who is affected

1 product

Know the next one before it finds you.

Add to Slack

TOTOLINK X2000R router: stack overflow in device-delete handler allows code execution

Why it is critical, and not just CVSS

Who is affected

Know the next one before it finds you.

TOTOLINK X2000R router: stack overflow in device-delete handler allows code execution

Why it is critical, and not just CVSS

Who is affected

Know the next one before it finds you.

How to check

The fix

Who had it, and when

What the sources say, verbatim

Sources