What’s Vulnerable › Vulnerabilities

CVE-2019-6553

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 66.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-04-04 · updated 2026-06-17
• Weakness: CWE-121

Description

A vulnerability was found in Rockwell Automation RSLinx Classic versions 4.10.00 and prior. An input validation issue in a .dll file of RSLinx Classic where the data in a Forward Open service request is passed to a fixed size buffer, allowing an attacker to exploit a stack-based buffer overflow condition.

Affected products

• Rockwell Automation RSLinx Classic®: through 4.10.00

References

• https://ics-cert.us-cert.gov/advisories/ICSA-19-064-01
• https://ics-cert.us-cert.gov/advisories/ICSA-19-064-01

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