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Findings

CVE-2017-12234

Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability

Published Sep 28, 2017 · updated Jun 16, 2026 · cisco ios

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: CSCvc43709.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 28, 2017 · Catalog

    Detected

    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 thes

  2. Mar 3, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Mar 24, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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 thes

Required action

Apply updates per vendor instructions.

CISA due date Mar 24, 2022

Affected

  • cpe cisco/iosversion unspecified
  • vendor Cisco IOS softwareversion unspecified

Sources

  • CISA KEVCVE-2017-12234

    There is a vulnerability in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service.

    cisa.gov
  • CVE.orgCVE-2017-12234

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2017-12234

    30-day exploitation probability 7.1%

    first.org
  • NIST NVDCVE-2017-12234

    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 vulnerabiliti

    nvd.nist.gov

References

CVE-2017-12234 · ZeroDay Findings