CVE-2023-27408

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-05-09 · updated 2026-10-23
Weakness: CWE-378

Description

A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). The `i2c` mutex file is created with the permissions bits of `-rw-rw-rw-`. This file is used as a mutex for multiple applications interacting with i2c. This could allow an authenticated attacker with access to the SSH interface on the affected device to interfere with the integrity of the mutex and the data it protects.

Affected products

Siemens SCALANCE LPE9403: before 2.1 — fixed in 2.1

How to fix

Upgrade to a fixed version: Siemens SCALANCE LPE9403 2.1. Check the vendor advisory for mitigations.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-325383.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-325383.pdf

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