Vulnerability Description
The mv, cp, and rm file utilities exposed within the ExtremeXOS (EXOS) shell environment fail to safely canonicalize paths and follow symbolic links outside of the intended privilege boundary. An attacker with low-privilege CLI access can create a symbolic link that references a privileged filesystem location and then invoke the affected utilities to read, modify, or replace security-critical files outside of their authorized scope. Under certain conditions, this may enable escalation to root-level access and persistent modification of the device software stack. Exploitation is possible remotely by an attacker holding a low-privilege account, or locally via the serial console. Extreme would like to thank Hadrien Barral (Université Gustave Eiffel) and Georges-Axel Jaloyan (French Ministry of the Interior) for responsible disclosure of their findings.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-8170?
CVE-2026-8170 is a documented vulnerability. The mv, cp, and rm file utilities exposed within the ExtremeXOS (EXOS) shell environment fail to safely canonicalize paths and follow symbolic links outside of the intended privilege boundary. An atta...
How severe is CVE-2026-8170?
CVSS scoring is not yet available for CVE-2026-8170. Check NVD for updates.
Is there a patch for CVE-2026-8170?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.