What’s Vulnerable › Vulnerabilities

CVE-2014-2256

• Severity: high (CVSS 7.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2014-03-24 · updated 2026-06-17
• Weakness: CWE-399

Description

Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service (defect-mode transition) via crafted ISO-TSAP packets, a different vulnerability than CVE-2014-2257.

Affected products

• Siemens Simatic S7 Cpu-1211C: all versions
• Siemens Simatic S7 Cpu 1200 Firmware: through 3.0.2; 3.0
• Siemens Simatic S7 Cpu 1212C: all versions
• Siemens Simatic S7 Cpu 1214C: all versions
• Siemens Simatic S7 Cpu 1215C: all versions
• Siemens Simatic S7 Cpu 1217C: all versions

References

• http://ics-cert.us-cert.gov/advisories/ICSA-14-079-02
• http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-654382.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-654382.pdf
• http://ics-cert.us-cert.gov/advisories/ICSA-14-079-02
• http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-654382.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-654382.pdf

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