CVE-2018-0123: A Path Traversal vulnerability in the diagnostic shell for Cisco IOS and IOS XE Software could allow an aut...

Security readout for executives and security teams

CVE-2018-0123 is a Cisco IOS and IOS XE diagnostic shell path traversal issue. A local authenticated user with diagnostic shell access could cause certain shell commands to overwrite restricted system files. This is mainly an insider, compromised-admin, or weak-access-control risk, not a remotely exploitable internet-facing flaw based on the provided sources. Exposure is likely limited to Cisco IOS and IOS XE devices where users have local authenticated access and can enter the diagnostic shell. Organizations with broad administrator access, shared credentials, or weak AAA controls have higher practical risk. Treat this as a targeted infrastructure integrity issue. It should be prioritized for network devices with broad admin access, but the provided sources do not support emergency handling for unauthenticated remote exploitation. Mitigation focus: Review Cisco advisory cisco-sa-20180207-ios for affected releases and vendor remediation guidance.; Prioritize remediation for devices where diagnostic shell access is available to non-essential users.; Restrict local and administrative access to trusted operators through AAA and role controls..

Prepared

Jun 7, 2026, 20:58 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.