What’s Vulnerable › Vulnerabilities

CVE-2019-10921

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-05-14 · updated 2026-06-17
• Weakness: CWE-256

Description

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). Unencrypted storage of passwords in the project could allow an attacker with access to port 10005/tcp to obtain passwords of the device. 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

Affected products

• Siemens Logo!8 Bm Firmware: before 8.3 — fixed in 8.3

How to fix

Upgrade to a fixed version: Siemens Logo!8 Bm Firmware 8.3. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/153124/Siemens-LOGO-8-Recoverable-Password-Format.html
• http://seclists.org/fulldisclosure/2019/May/49
• http://www.securityfocus.com/bid/108382
• https://cert-portal.siemens.com/productcert/pdf/ssa-542701.pdf
• https://seclists.org/bugtraq/2019/May/74
• http://packetstormsecurity.com/files/153124/Siemens-LOGO-8-Recoverable-Password-Format.html
• http://seclists.org/fulldisclosure/2019/May/49
• http://www.securityfocus.com/bid/108382
• https://cert-portal.siemens.com/productcert/pdf/ssa-542701.pdf
• https://seclists.org/bugtraq/2019/May/74

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