This updated advisory is a follow-up to the original advisory titled ICSA-15-258-02 3S CODESYS Gateway Server Buffer overflow Vulnerability that was published September 15, 2015, on the ICS webpage at cisa.gov/ics. This advisory provides mitigation details for a heap-based buffer overflow vulnerability in CODESYS Gateway Server products.

https://us-cert.cisa.gov/ics/advisories/ICSA-15-258-02