What’s Vulnerable › Vulnerabilities

CVE-2017-12741

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-12-26 · updated 2026-06-17
• Weakness: CWE-400

Description

Specially crafted packets sent to port 161/udp could cause a denial of service condition. The affected devices must be restarted manually.

Affected products

• Siemens Dk Standard Ethernet Controller Firmware: all versions
• Siemens Ek-Ertec 200P Firmware: before 4.5 — fixed in 4.5
• Siemens Ek-Ertec 200Pn Io Firmware: all versions
• Siemens Simatic Compact Field Unit Firmware: all versions
• Siemens Simatic Et 200Al Firmware: all versions
• Siemens Simatic Et 200Ecopn Firmware: all versions
• Siemens Simatic Et 200M Firmware: all versions
• Siemens Simatic Et 200Mp Firmware: all versions
• Siemens Simatic Et 200Pro Firmware: all versions
• Siemens Simatic Et 200S Firmware: all versions
• Siemens Simatic Et 200Sp Firmware: all versions
• Siemens Simatic Pn/Pn Coupler Firmware: all versions
• Siemens Simatic S7-1200 Firmware: all versions
• Siemens Simatic S7-1500 Controller Firmware: 2.0
• Siemens SIMATIC S7-1500 CPU: before 2.0 — fixed in 2.0
• Siemens Simatic S7-200 Firmware: before 2.03.01 — fixed in 2.03.01
• Siemens Simatic S7-300 Firmware: all versions
• Siemens Simatic S7-400H V6 Firmware: before 6.0.8 — fixed in 6.0.8
• Siemens Simatic S7-400Pn/Dp V7 Firmware: all versions
• Siemens Simatic S7-400Pn V6 Firmware: before 6.0.6 — fixed in 6.0.6
• Siemens Simatic S7-410 V8 Firmware: all versions
• Siemens Simatic Winac Rtx F 2010 Firmware: all versions
• Siemens Simocode Pro V Profinet Firmware: all versions
• Siemens Simotion C Firmware: through 5.1
• Siemens Simotion D Firmware: through 5.1
• Siemens Simotion P Firmware: through 5.1
• Siemens Sinamics Dcm Firmware: all versions
• Siemens Sinamics Dcp Firmware: all versions
• Siemens Sinamics G110M/G120Pn Firmware: through 4.7
• Siemens Sinamics G130 Firmware: all versions

How to fix

Upgrade to a fixed version: Siemens Ek-Ertec 200P Firmware 4.5; Siemens SIMATIC S7-1500 CPU 2.0; Siemens Simatic S7-200 Firmware 2.03.01; Siemens Simatic S7-400H V6 Firmware 6.0.8; Siemens Simatic S7-400Pn V6 Firmware 6.0.6. Check the vendor advisory for mitigations.

References

• https://cert-portal.siemens.com/productcert/html/ssa-141614.html
• https://cert-portal.siemens.com/productcert/html/ssa-346262.html
• https://cert-portal.siemens.com/productcert/html/ssa-546832.html
• https://cert-portal.siemens.com/productcert/pdf/ssa-141614.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-346262.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-546832.pdf
• https://www.securityfocus.com/bid/101964
• https://cert-portal.siemens.com/productcert/html/ssa-141614.html
• https://cert-portal.siemens.com/productcert/html/ssa-346262.html
• https://cert-portal.siemens.com/productcert/html/ssa-546832.html
• https://cert-portal.siemens.com/productcert/pdf/ssa-141614.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-346262.pdf

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