CVE-2017-12239

A vulnerability in motherboard console ports of line cards for Cisco ASR 1000 Series Aggregation Services Routers and Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, physical attacker to access an affected device's operating system. The vulnerability exists because an engineering console port is available on the motherboard of the affected line cards. An attacker could exploit this vulnerability by physically connecting to the console port on the line card. A successful exploit could allow the attacker to gain full access to the affected device's operating system. This vulnerability affects only Cisco ASR 1000 Series Routers that have removable line cards and Cisco cBR-8 Converged Broadband Routers, if they are running certain Cisco IOS XE 3.16 through 16.5 releases. Cisco Bug IDs: CSCvc65866, CSCve77132.

• CWE-264
• CWE-798

• http://www.securityfocus.com/bid/101042Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039454Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039455Third Party Advisory, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-ccVendor Advisory
• http://www.securityfocus.com/bid/101042Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039454Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039455Third Party Advisory, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-ccVendor Advisory

Published

Sep 29, 2017

Last Modified

Jun 17, 2026

Status

Modified

• 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-2017-12233Multiple vulnerabilities in the implementation of the Common…7.5
• CVE-2017-12234Multiple vulnerabilities in the implementation of the Common…7.5
• CVE-2017-12235A vulnerability in the implementation of the PROFINET Discov…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-2017-1224IBM 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
• CVE-2017-12243A vulnerability in the Cisco Unified Computing System (UCS) …
• CVE-2017-12244A vulnerability in the detection engine parsing of IPv6 pack…
• CVE-2017-12245A vulnerability in SSL traffic decryption for Cisco Firepowe…
• CVE-2017-12246A vulnerability in the implementation of the direct authenti…