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CVE

CWE

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CVE-2026-2331

Published: Mar 6, 2026

Modified: Mar 9, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

Description

An attacker may perform unauthenticated read and write operations on sensitive filesystem areas via the AppEngine Fileaccess over HTTP due to improper access restrictions. A critical filesystem directory was unintentionally exposed through the HTTP-based file access feature, allowing access without authentication. This includes device parameter files, enabling an attacker to read and modify application settings, including customer-defined passwords. Additionally, exposure of the custom application directory may allow execution of arbitrary Lua code within the sandboxed AppEngine environment.

Vendor	Product	Versions
SICK AG	SICK Lector85x	affected `2.6.0 - <= 2.7.0`
SICK AG	SICK Lector83x	affected `2.6.0 - <= 2.7.0`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

https://www.sick.com/psirt

x_SICK PSIRT Security Advisories

https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdf

x_SICK Operating Guidelines

https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

x_ICS-CERT recommended practices on Industrial Security

https://www.first.org/cvss/calculator/3.1

x_CVSS v3.1 Calculator

https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0006.json

x_The canonical URL.

https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0006.pdf

vendor-advisory

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