CVE-2018-0477

A vulnerability in the CLI parser of Cisco IOS XE Software could allow an authenticated, local attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability exist because the affected software improperly sanitizes command arguments, failing to prevent access to certain internal data structures on an affected device. An attacker who has privileged EXEC mode (privilege level 15) access to an affected device could exploit these vulnerabilities on the device by executing CLI commands that contain custom arguments. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the affected device.

• CWE-77
• CWE-78

• http://www.securitytracker.com/id/1041737Third Party Advisory, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-iosxe-cmdinjVendor Advisory
• http://www.securitytracker.com/id/1041737Third Party Advisory, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-iosxe-cmdinjVendor Advisory

Published

Oct 5, 2018

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-2018-0471A vulnerability in the Cisco Discovery Protocol (CDP) module…7.4
• CVE-2018-0472A vulnerability in the IPsec driver code of multiple Cisco I…
• CVE-2018-0473A vulnerability in the Precision Time Protocol (PTP) subsyst…
• CVE-2018-0474A vulnerability in the web-based management interface of Cis…8.8
• CVE-2018-0475A vulnerability in the implementation of the cluster feature…
• CVE-2018-0476A vulnerability in the Network Address Translation (NAT) Ses…
• CVE-2018-0480A vulnerability in the errdisable per VLAN feature of Cisco …
• CVE-2018-0481A vulnerability in the CLI parser of Cisco IOS XE Software c…6.7
• CVE-2018-0482A vulnerability in the web-based management interface of Cis…5.4
• CVE-2018-0483A vulnerability in Cisco Jabber Client Framework (JCF) could…4.6
• CVE-2018-0484A vulnerability in the access control logic of the Secure Sh…5.3
• CVE-2018-0485A vulnerability in the SM-1T3/E3 firmware on Cisco Second Ge…