7.5
CVSSv3

CVE-2019-10920

Published: 14/05/2019 Updated: 04/01/2022
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Vulnerability Summary

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). Project data stored on the device, which is accessible via port 10005/tcp, can be decrypted due to a hardcoded encryption key. The security vulnerability could be exploited by an unauthenticated attacker with network access to port 10005/tcp. No user interaction is required to exploit this security vulnerability. The vulnerability impacts confidentiality of the device. At the time of advisory publication no public exploitation of this security vulnerability was known.

Vulnerability Trend

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Exploits

Due to the use of a hard-coded cryptographic key, an attacker can put the integrity and confidentiality of encrypted data of all Siemens LOGO! 8 PLCs using this key at risk, for instance decrypting network communication during a man-in-the-middle attack ...