CVE-2021-41579

HIGH

LCDS LAquis SCADA <= 4.3.1.1085 - Path Traversal and Arbitrary File Write via Malicious ELS Project File

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-41579. PoCs published by mbanyamer.

AI-analyzed exploit summary This PoC demonstrates an arbitrary file write vulnerability in LCDS LAquis SCADA <= 4.3.1.1085 via path traversal in malicious .els project files. It modifies legitimate .els files to include traversal sequences, allowing file writes to arbitrary locations when the victim opens and plays the project.

Description

LCDS LAquis SCADA through 4.3.1.1085 is vulnerable to a control bypass and path traversal. If an attacker can get a victim to load a malicious els project file and use the play feature, then the attacker can bypass a consent popup and write arbitrary files to OS locations where the user has permission, leading to code execution.

Exploits (1)

nomisec WORKING POC
by mbanyamer · poc
https://github.com/mbanyamer/CVE-2021-41579-LCDS-LAquis-SCADA-4.3.1.1085-Arbitrary-File-Write

This PoC demonstrates an arbitrary file write vulnerability in LCDS LAquis SCADA <= 4.3.1.1085 via path traversal in malicious .els project files. It modifies legitimate .els files to include traversal sequences, allowing file writes to arbitrary locations when the victim opens and plays the project.

Classification
Working Poc 95%
Attack Type
Other
Complexity
Moderate
Reliability
Reliable
Target: LCDS LAquis SCADA <= 4.3.1.1085
No auth needed
Prerequisites: Legitimate base .els file from vulnerable LAquis SCADA · Victim interaction to open and play the malicious .els file
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1

Scores

CVSS v3 7.8
EPSS 0.0123
EPSS Percentile 65.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-22
Status published
Products (1)
laquisscada/scada < 4.3.1.1085
Published Oct 04, 2021
Tracked Since Feb 18, 2026