CVE-2017-12233

CVE-2017-12233

Vendor N/A
Product Cisco IOS
Weakness CWE-20 · Input validation
KEV Status Known Exploited
Published September 28, 2017
Last update January 12, 2026

CVSS base score

What the vulnerability does

01Description

Multiple vulnerabilities in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS 12.4 through 15.6 could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerabilities are due to the improper parsing of crafted CIP packets destined to an affected device. An attacker could exploit these vulnerabilities by sending crafted CIP packets to be processed by an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuz95334.

CISA mandated remediation

02CISA Required Action

Apply updates per vendor instructions.

Key dates

03Disclosure timeline

September 28, 2017 CVE published
January 12, 2026 Record updated