What is CVE-2026-40627?

CVE-2026-40627 is a critical-severity vulnerability in Totolink, classified under OS Command Injection. CVSS score: 9.1/10. Published 2026-10-20.

How severe is CVE-2026-40627?

Critical severity. CVSS v3 base score is 9.1 out of 10.

RCE in Totolink

CVE-2026-40627

An os command injection vulnerability exists in the boa formWsc targetAPSsid functionality of Totolink X2000R TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-10-20.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Totolink — versions TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

talosintelligence.com/vulnerability_reports/TALOS-2026-2388

Frequently asked questions

What is CVE-2026-40627?: CVE-2026-40627 is a critical-severity vulnerability in Totolink, classified under OS Command Injection. CVSS score: 9.1/10. Published 2026-10-20.
How severe is CVE-2026-40627?: Critical severity. CVSS v3 base score is 9.1 out of 10.