Is CVE-2026-9406 actively exploited?

No active exploitation of CVE-2026-9406 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-9406 be exploited remotely?

Yes. CVE-2026-9406 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-9406?

CVE-2026-9406 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-9406

CWE-77Published: May 25, 2026· Updated: May 26, 2026

9.8

CVSS v3.1

EPSS:0.89%probability of exploitation in 30 daysPercentile:75.8th

Official Description

A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function setRemoteCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument enable can lead to os command injection. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.

NVD Source

Technical Analysis

CVE-2026-9406 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.