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CVE-2026-78239 is a missing-authentication vulnerability in Xiiaozet LK100W firmware versions before 2.1.240. A critical management function is remotely accessible without authentication and can be used to enable administrative services that should be restricted. This exposes privileged device-management functionality to unauthenticated network attackers.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical missing-authentication vulnerability in the Xiiaozet LK100W that permits remote unauthenticated access to a critical management function and enables restricted administrative services.
An unauthenticated critical management-function exposure in the Xiiaozet LK100W that allows a remote attacker to enable restricted administrative services and potentially gain unauthorized device access.
An unauthenticated remote vulnerability in the Xiiaozet LK100W that permits an attacker to invoke a critical management function and enable restricted administrative services, potentially gaining unauthorized device access. It is categorized as CWE-306 (missing authentication for a critical function) and has CVSS v3.1 and v4 network-based critical-impact vectors.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.