CVE-2017-12235

A vulnerability in the implementation of the PROFINET Discovery and Configuration Protocol (PN-DCP) for Cisco IOS 12.2 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 vulnerability is due to the improper parsing of ingress PN-DCP Identify Request packets destined to an affected device. An attacker could exploit this vulnerability by sending a crafted PN-DCP Identify Request packet to an affected device and then continuing to send normal PN-DCP Identify Request packets to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. This vulnerability affects Cisco devices that are configured to process PROFINET messages. Beginning with Cisco IOS Software Release 12.2(52)SE, PROFINET is enabled by default on all the base switch module and expansion-unit Ethernet ports. Cisco Bug IDs: CSCuz47179.

• CWE-20

• http://www.securityfocus.com/bid/101043Broken Link, Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039451Broken Link, Third Party Advisory, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-profinetVendor Advisory
• http://www.securityfocus.com/bid/101043Broken Link, Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039451Broken Link, Third Party Advisory, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-profinetVendor Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-12235US Government Resource

Published

Sep 29, 2017

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2017-1223IBM Tivoli Endpoint Manager could allow a remote attacker to…
• CVE-2017-12230A vulnerability in the web-based user interface (web UI) of …
• CVE-2017-12231A vulnerability in the implementation of Network Address Tra…7.5
• CVE-2017-12232A vulnerability in the implementation of a protocol in Cisco…6.5
• CVE-2017-12233Multiple vulnerabilities in the implementation of the Common…7.5
• CVE-2017-12234Multiple vulnerabilities in the implementation of the Common…7.5
• CVE-2017-12236A vulnerability in the implementation of the Locator/ID Sepa…
• CVE-2017-12237A vulnerability in the Internet Key Exchange Version 2 (IKEv…7.5
• CVE-2017-12238A vulnerability in the Virtual Private LAN Service (VPLS) co…6.5
• CVE-2017-12239A vulnerability in motherboard console ports of line cards f…6.8
• CVE-2017-1224IBM Tivoli Endpoint Manager uses weaker than expected crypto…
• CVE-2017-12240The DHCP relay subsystem of Cisco IOS 12.2 through 15.6 and …9.8