How do I check whether I am affected by CVE-2026-10137?

Open the router admin page (Status or System) and read the firmware version. TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 is confirmed vulnerable. Check whether the web admin is reachable from WAN, for example by scanning your public IP on the admin port (80/8080).

What is the fix for CVE-2026-10137?

No fixed firmware published as of 2026-10-23; unknown. Check https://www.totolink.net/home/menu/newstpl/menu_newstpl/products/id/242.html for newer firmware. Until then, turn off remote/WAN administration, restrict the admin UI to LAN, change the default admin password, and avoid untrusted devices on the LAN.

Who is not affected by CVE-2026-10137?

Not affected if: auth-required, no-web-admin-exposure, other-models.

Live › vulnerability › CVE-2026-10137

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critical9.1Infrastructure

TOTOLINK X2000R router: stack overflow in upload handler allows code execution

Stack buffer overflow in the boa web server's formUpload() on the TOTOLINK X2000R. After login, a long devicemacN POST parameter (used when mesh mode is on) is strcpy'd into a fixed stack buffer with no length check, giving code execution on the router. It needs valid admin credentials (CVSS PR:H). Talos found it and reported it to the vendor on 2026-06-16. The vendor acknowledged it on 2026-06-25, and no patch is listed.

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 after logging in.
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-2026-10137

Go to dashboard

critical9.1Infrastructure

TOTOLINK X2000R router: stack overflow in upload 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 after logging in.
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 upload 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 upload 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