What’s Vulnerable › Vulnerabilities

CVE-2018-14821

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-09-20 · updated 2026-06-17
• Weakness: CWE-122

Description

Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally send a malformed CIP packet to Port 44818, causing the RSLinx Classic application to terminate. The user will need to manually restart the software to regain functionality.

Affected products

• Rockwell Automation RSLinx Classic®: through 4.00.01

References

• https://ics-cert.us-cert.gov/advisories/ICSA-18-263-02
• https://www.tenable.com/security/research/tra-2018-26
• https://ics-cert.us-cert.gov/advisories/ICSA-18-263-02
• https://www.tenable.com/security/research/tra-2018-26

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