CVE-2026-78239 Xiiaozet LK100W Missing Authentication for Critical Function
Remote attackers can invoke critical management functions without authentication to enable restricted administrative services on the device.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78239?
CVE-2026-78239 is a critical missing authorization vulnerability in Xiiaozet LK100W, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2026-78239?
How do I fix CVE-2026-78239?
No fix has been published for CVE-2026-78239 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-78239 being exploited?
There is no known exploitation of CVE-2026-78239 in the wild and no public exploit code.
Sources
Also known as GHSA-38f6-3gv7-32xr.