CVE-2026-2331 | An attacker may perform unauthenticated read and write opera… | CVSS 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.

Metadata

CVE ID: CVE-2026-2331
State: PUBLISHED
Assigner: SICK AG
Reserved: 2026-02-11 09:33 UTC
Published: 2026-03-06 07:56 UTC
Last updated: 2026-03-09 21:04 UTC
Primary CWE: CWE-552
CWE-552 Files or Directories Accessible to External Parties
Vendor / Product: SICK AG / SICK Lector85x
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (2)

Vendor	Product	Platform	Versions
SICK AG	SICK Lector83x	—	2.6.0 ≤ 2.7.0
SICK AG	SICK Lector85x	—	2.6.0 ≤ 2.7.0

Weakness (CWE)

CWE	Source	Description
CWE-552	cna	CWE-552 Files or Directories Accessible to External Parties

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (6)