Xiiaozet LK100W

August 27, 2026·Source: CISA

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TL;DR

View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to take control over the device. The following versions of Xiiaozet LK100W are affected: LK100W <2.1.240 (CVE-2026-78037, CVE-2026-78239, CVE-2026-76943) CVSS Vendor Equipment Vulnerabilities

v3 9.8 Xiiaozet Xiiaozet LK100W Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), Missing Authentication for Critical Function, Authentication Bypass Using an Alternate Path or Channel

Background Critical Infrastructure Sectors: Information Technology Countries/Areas Deployed: Worldwide Company Headquarters Location: China Vulnerabilities Expand All + CVE-2026-78037 Xiiaozet LK100W is vulnerable to OS command injection through its web-based management interface. An authenticated attacker may be able to execute arbitrary operating system commands with elevated privileges, potentially resulting in unauthorized access to sensitive information or complete device compromise. View CVE Details Affected Products Xiiaozet LK100W Vendor: Xiiaozet Product Version: Xiiaozet LK100W: <2.1.240 Product Status: known_affected Remediations Mitigation Xiiaozet recommends users update to v2.1.240. Relevant CWE: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') Metrics CVSS Version Base Score Base Severity Vector String

3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

4.0 8.7 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVE-2026-78239 Xiiaozet LK100W exposes a critical management function that can be invoked without authentication, allowing a remote attacker to enable administrative services that should be restricted. Successful exploitation may permit unauthorized access to the device. View CVE Details Affected Products Xiiaozet LK100W Vendor: Xiiaozet Product Version: Xiiaozet LK100W: <2.1.240 Product Status: known_affected Remediations Mitigation Xiiaozet recommend

What Happened

Xiiaozet LK100W, reported by CISA.

3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

4.0 8.7 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

For the full technical details, see the original report.

Why It Matters for Businesses

This development could affect organizations that rely on the impacted technologies or services. Unpatched systems, misconfigured infrastructure, or lack of monitoring can leave businesses exposed to exploitation, data breaches, and regulatory penalties.

How to Check Your Exposure

Run a free scan on NEL Professional's Cyber Risk Scanner to check whether your domain is affected. The scan covers SSL/TLS, security headers, DNS configuration, email authentication, and more across 16 modules.

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Mitigation Steps

Patch immediately, Apply vendor patches or updates as soon as they are available.
Review configurations, Check firewall rules, access controls, and security headers.
Monitor logs, Watch for indicators of compromise (IOCs) related to this threat.
Update security policies, Ensure incident response plans cover this type of threat.
Run a security scan, Use automated tools to verify your exposure.

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