How do I check whether I am affected by CVE-2026-10138?

Open the router admin page and read the firmware version. TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 is confirmed vulnerable; other builds are untested, so treat them as unknown. Exploitation needs a login to /boafrm/formLogin; the Talos code path also needs easy-mesh enabled (or settable by the attacker). Check if the admin UI answers from the WAN side.

What is the fix for CVE-2026-10138?

No fixed firmware as of 2026-10-23 (none named by Talos, NVD or TOTOLINK). Mitigate: disable WAN/remote management, change the default admin password, turn off easy-mesh if unused, keep the admin UI on a trusted LAN only, and watch the TOTOLINK X2000R download page for a newer build.

Who is not affected by CVE-2026-10138?

Not affected if: auth-required, managed-hosting, wan-management-disabled.

Live › vulnerability › CVE-2026-10138

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critical9.1Infrastructure

TOTOLINK X2000R router: crafted upload request runs OS commands

In the TOTOLINK X2000R boa web server, formUpload() builds an Mcli shell command from the devicemac%d POST parameters (only when easy-mesh mode is on) and runs it with system() without sanitising. An authenticated attacker gets root-level command execution on the router. CVSS 9.1 (Talos). No vendor fix is published; Talos disclosed after three months of follow-ups.

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 commands as root on the router.
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-2026-10138

Go to dashboard

critical9.1Infrastructure

TOTOLINK X2000R router: crafted upload request runs OS commands

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 commands as root on the router.
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: crafted upload request runs OS commands

Why it is critical, and not just CVSS

Who is affected

Know the next one before it finds you.

TOTOLINK X2000R router: crafted upload request runs OS commands

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