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CVE-2026-78239— Xiiaozet LK100W Missing Authentication for Critical Function

Quick assessment

Affected
Xiiaozet Xiiaozet LK100W
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Xiiaozet LK100W是Xiiaozet公司的一款打印机。 Xiiaozet LK100W 2.1.240之前版本存在授权问题漏洞，该漏洞源于关键管理功能无需身份验证即可调用，可能导致远程攻击者启用本应受限的管理服务并未授权访问设备。

CVSS 9.8 · Critical EPSS 0.77% · P55

Affected Version Matrix 2

VendorProduct Version RangeStatus
Xiiaozet Xiiaozet LK100W < 2.1.240 affected
2.1.240 unaffected
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I. Basic Information for CVE-2026-78239

Vulnerability Information
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Vulnerability Title
Xiiaozet LK100W Missing Authentication for Critical Function
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Xiiaozet LK100W 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xiiaozet LK100W是Xiiaozet公司的一款打印机。 Xiiaozet LK100W 2.1.240之前版本存在授权问题漏洞，该漏洞源于关键管理功能无需身份验证即可调用，可能导致远程攻击者启用本应受限的管理服务并未授权访问设备。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Xiiaozet Xiiaozet LK100W 0 ~ 2.1.240 -

II. Public POCs for CVE-2026-78239

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III. Intelligence Information for CVE-2026-78239

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Patches & Fixes for CVE-2026-78239 (1)

Vendor Advisories for CVE-2026-78239 (1)

Same Patch Batch · Xiiaozet · 2026-08-27 · 3 CVEs total

CVE-2026-76943 9.8 CRITICAL Xiiaozet LK100W Authentication Bypass Using an Alternate Path or Channel
CVE-2026-78037 8.8 HIGH Xiiaozet LK100W OS Command Injection

IV. Related Vulnerabilities

Same product: Xiiaozet LK100W
Same vendor: Xiiaozet
Same weakness: CWE-306