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[0day-rubbish] LCDS Laquis SCADA Unauthenticated /uploade.html file write chained with CMDEXT*.DLL autoload (9.8)


From: disclosure via Fulldisclosure <fulldisclosure () seclists org>
Date: Sun, 20 Sep 2026 12:18:26 +0000

0day Rubbish Research Team is publicly disclosing a vulnerability in
LCDS Laquis SCADA.

Type: Unauthenticated /uploade.html file write chained with CMDEXT*.DLL autoload (CWE-434)
CVSS: 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Impact: arbitrary native code execution inside the SCADA web and HMI process, which also hosts the Modbus TCP listener
Authentication: unauthenticated (no password configured is the default)

Full technical analysis and a reproducible proof-of-concept:
  https://0day-rubbish.com/blog/lcds-laquis-scada-unauth-uploade-cmdext-dll-rce

Project archive (ongoing disclosure series):
  https://github.com/Exploit-Garbage/0day-Rubbish

Vendor has been notified. CVE ID is pending.

--
0day Rubbish Research Team
disclosure () 0day-rubbish com
https://0day-rubbish.com
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