CVE-2012-4122: The CLI parser in Cisco NX-OS allows local users to bypass intended access restrictions, and overwrite or c...

Security readout for executives and security teams

CVE-2012-4122 is a Cisco NX-OS CLI parser issue that could let local users bypass intended access controls and create or overwrite arbitrary files. The business risk is concentrated on network devices where untrusted or lower-privileged CLI users exist. The provided sources do not name affected versions, CVSS severity, or a confirmed fix. Exposure is most likely on Cisco NX-OS deployments that allow local CLI access by multiple administrators, operators, automation accounts, or constrained roles. The bundle does not provide affected versions, so exposure cannot be determined from inventory alone without checking Cisco guidance. Handle as an infrastructure control-plane risk, not a confirmed internet-scale emergency. Prioritize Cisco NX-OS inventory, vendor advisory review, and account restriction, especially where lower-privileged users can access device CLI. Mitigation focus: Review Cisco's security notice for affected NX-OS releases and vendor-approved remediation.; Apply Cisco-recommended fixed software or workarounds if your release is listed as affected.; Limit local CLI access to trusted administrators and remove unnecessary accounts..

Prepared

Jun 14, 2026, 15:32 UTC (UTC+00:00)

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