Switch Engine Exos EUVD-2026-46048

Extreme Networks ExtremeXOS switches contain a privilege escalation vulnerability allowing authenticated CLI users to gain root access and persistently modify device firmware and configuration. This poses significant operational and security risk to network infrastructure with no patch currently available, requiring immediate access controls and compensating measures.

Within 24 hours: inventory all Extreme Networks ExtremeXOS devices and immediately restrict CLI access to authorized administrative personnel only; review recent access logs for unauthorized user activity and symlink operations. Within 7 days: implement network segmentation restricting switch management access to trusted administrative networks; enable detailed CLI command auditing focused on file operation utilities (mv, cp, rm) with real-time alerting; begin daily monitoring of Extreme Networks security advisories for patch availability. Within 30 days: develop and execute a patching deployment plan once vendor releases a fix with a target implementation timeline; conduct comprehensive access control audit across all switches to enforce principle of least privilege; review and document all interim compensating controls in your incident response procedures.

No vendor-released patch identified at time of analysis. Interim mitigations include: restrict CLI access exclusively to administrative users with business justification; limit or disable low-privileged user access to file manipulation utilities; enable comprehensive command logging on all CLI sessions with focus on file operations; monitor filesystem for suspicious symlink creation in authorized user directories; implement network segmentation to restrict switch management traffic to hardened administrative networks; maintain enhanced monitoring for unauthorized privilege escalation attempts; establish formal change control for any CLI-based configuration modifications.