What’s Vulnerable › Vulnerabilities

CVE-2014-5414: Beckhoff Embedded PC Images and TwinCAT Components Improper Restriction of Excessive Authentication Attempts

• Severity: critical (CVSS 9.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-10-05 · updated 2026-06-17
• Weakness: CWE-307

Description

Beckhoff Embedded PC images before 2014-10-22 and Automation Device Specification (ADS) TwinCAT components do not restrict the number of authentication attempts, which makes it easier for remote attackers to obtain access via a brute-force attack.

Affected products

• Beckhoff Embedded PC Images: all versions
• ICS-CERT Beckhoff TwinCAT: all versions

References

• http://www.securityfocus.com/bid/93349
• https://download.beckhoff.com/download/document/product-security/Advisories/advisory-2014-001.pdf
• https://download.beckhoff.com/download/document/product-security/Advisories/advisory-2014-002.pdf
• https://download.beckhoff.com/download/document/product-security/Advisories/advisory-2014-003.pdf
• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2016/icsa-16-278-02.json
• https://www.cisa.gov/news-events/ics-advisories/icsa-16-278-02
• http://www.securityfocus.com/bid/93349
• https://ics-cert.us-cert.gov/advisories/ICSA-16-278-02

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