What’s Vulnerable › Vulnerabilities

CVE-2021-27388

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-15 · updated 2026-06-17
• Weakness: CWE-20

Description

SINAMICS medium voltage routable products are affected by a vulnerability in the Sm@rtServer component for remote access that could allow an unauthenticated attacker to cause a denial-of-service condition, and/or execution of limited configuration modifications and/or execution of limited control commands on the SINAMICS Medium Voltage Products, Remote Access (SINAMICS SL150: All versions, SINAMICS SM150: All versions, SINAMICS SM150i: All versions).

Affected products

• Siemens Sinamics Sl150 Firmware: all versions
• Siemens Sinamics Sm150 Firmware: all versions
• Siemens Sinamics Sm150I Firmware: all versions

References

• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-04
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-04

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