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Vulnerability record · CVE-2026-11841 · published 28 July 2026

CVE-2026-11841: An attacker may perform unauthenticated read and write operations on sensitive filesystem areas via the AppEng…

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.

9.4 CVSS 3.1 Critical EPSS 0.85% · top 43.4% CWE-552 · CWE-552 Deferred
9.4CVSS 3.1 base score
0.85%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
9 Sep 2026Last modified by NVD

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.

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

References

LinkTags
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
https://www.first.org/cvss/calculator/3.1
https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0010.json
https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0010.pdf
https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im010671
https://www.sick.com/psirt

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Source: NIST National Vulnerability Database (record CVE-2026-11841), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.