CVE-2026-76943

CRITICAL 9.8

Xiiaozet LK100W Authentication Bypass Using an Alternate Path or Channel

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

Xiiaozet LK100Wt contains an authentication weakness within an administrative service that may allow an attacker to bypass intended access controls and obtain command execution capabilities. Successful exploitation could allow unauthorized interaction with privileged functionality and may lead to complete device compromise.

CWE	CWE-288
Vendor	xiiaozet
Product	xiiaozet lk100w
Published	Aug 27, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Xiiaozet / Xiiaozet LK100W

0 < 2.1.240

References

NVD ↗ CVE.org ↗ EPSS Data ↗

cisa.gov: https://www.cisa.gov/news-events/ics-advisories/icsa-26-239-01 github.com: https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-239-01.json

Credits

Byron Guernsey of Okachobi, LLC reported this vulnerability to CISA.