Auth bypass in Extreme Networks Switch Engine (Exos)

CVE-2026-105440

Missing authorization in the JSON-RPC web services interface
of Extreme Networks Switch Engine (EXOS) allows an authenticated,
low-privileged (read-only) user to execute CLI show commands that are
restricted to that role through the command line interface. Successful
exploitation results in disclosure of sensitive information, including the
device configuration and the password hashes of local accounts. Configuration,
enable, and debug commands are not affected. Disclosed password hashes can be
attacked offline, and a weak password could lead to administrative access to
the device. This issue is fixed in Switch Engine 33.7.1-patch1-11,
33.1.100.133-patch1-9, and 32.7.4.15-patch1-11.

Extreme Networks would like to thank Toàn Lê (GitHub: https://github.com/toanln-cov) for responsibly disclosing this vulnerability and for working with our PSIRT team through coordinated disclosure.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

FIRST.org has not scored this CVE yet. About EPSS.

Affected products

Weakness classification (CWE)

Public exploits and proof-of-concept code

1 public repository with exploit or proof-of-concept code for this CVE:

  • toanln-cov/CVE-2026-105440 (last pushed 2026-11-12): Broken Access Control via JSON-RPC API — Privilege Escalation to Admin Credentials

References

This CVE has public exploit evidence. See the latest CVEs with public exploits.