CVE-2020-7593

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-07-14 · updated 2026-06-17
Weakness: CWE-120

Description

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (V1.81.01 - V1.81.03), LOGO! 8 BM (incl. SIPLUS variants) (V1.82.01), LOGO! 8 BM (incl. SIPLUS variants) (V1.82.02). A buffer overflow vulnerability exists in the Web Server functionality of the device. A remote unauthenticated attacker could send a specially crafted HTTP request to cause a memory corruption, potentially resulting in remote code execution.

Affected products

Siemens LOGO! 8 BM (incl. SIPLUS variants): from 1.81.01 through 1.81.03; 1.82.01, 1.82.02

References

https://cert-portal.siemens.com/productcert/pdf/ssa-573753.pdf
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1069
https://cert-portal.siemens.com/productcert/pdf/ssa-573753.pdf
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1069

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