RSLinx Classic vulnerabilities
4 known CVE vulnerabilities in RSLinx Classic, translated and rated.
- CVE-2026-9625High
Denial-of-service vulnerability in RSLinx Classic. A crafted CIP packet with an oversized embedded message request can crash the RSLinx Classic service, requiring a restart to recover.
- CVE-2026-9624High
Denial-of-service vulnerability in RSLinx Classic. A crafted CIP packet can crash the RSLinx Classic service due to insufficient data length validation, requiring a restart to recover.
- CVE-2026-9622High
A denial-of-service vulnerability exists in RSLinx Classic. A crafted CIP packet targeting the Forward Close service can crash the RSLinx Classic service, requiring a restart to recover.
- CVE-2026-9621Critical
A denial-of-service issue exists in RSLinx Classic due to improper handling of a malformed packet. A crafted CIP packet can crash the service, requiring restart.