CVE-2026-78239CWE-306

CVE-2026-78239

Critical · published August 28, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
55.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00766 · 55.0th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-08-28T04:18Z
References (2)
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-239-01.json · [email protected]https://www.cisa.gov/news-events/ics-advisories/icsa-26-239-01 · [email protected]
EPSS history
Timeline
  • 27 AUG 21:48Z
    Xiiaozet LK100W Missing Authentication for Critical Function
    cvelistv5