What’s Vulnerable › Vulnerabilities

CVE-2017-7924

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 22.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-09-20 · updated 2026-06-17
• Weakness: CWE-20

Description

An Improper Input Validation issue was discovered in Rockwell Automation MicroLogix 1100 controllers 1763-L16BWA, 1763-L16AWA, 1763-L16BBB, and 1763-L16DWD. A remote, unauthenticated attacker could send a single, specially crafted Programmable Controller Communication Commands (PCCC) packet to the controller that could potentially cause the controller to enter a DoS condition.

Affected products

• Rockwellautomation 1763-L16Awa Firmware: all versions
• Rockwellautomation 1763-L16Bbb Firmware: all versions
• Rockwellautomation 1763-L16Bwa Firmware: all versions
• Rockwellautomation 1763-L16Dwd Firmware: all versions

References

• http://www.securityfocus.com/bid/99622
• https://ics-cert.us-cert.gov/advisories/ICSA-17-138-03
• http://www.securityfocus.com/bid/99622
• https://ics-cert.us-cert.gov/advisories/ICSA-17-138-03

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