Critical severity9.8NVD Advisory· Published Aug 24, 2023· Updated Jun 17, 2026
CVE-2023-4420
CVE-2023-4420
Description
A remote unprivileged attacker can intercept the communication via e.g. Man-In-The-Middle, due to the absence of Transport Layer Security (TLS) in the SICK LMS5xx. This lack of encryption in the communication channel can lead to the unauthorized disclosure of sensitive information. The attacker can exploit this weakness to eavesdrop on the communication between the LMS5xx and the Client, and potentially manipulate the data being transmitted.
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Affected products
5- cpe:2.3:o:sick:lms500_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:sick:lms511_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:sick:lms531_firmware:*:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
3- sick.com/.well-known/csaf/white/2023/sca-2023-0007.jsonnvdVendor Advisory
- sick.com/.well-known/csaf/white/2023/sca-2023-0007.pdfnvdVendor Advisory
- sick.com/psirtnvdVendor Advisory
News mentions
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