CVE-2026-8169
ExtremeXOS Debug-Mode Privilege Escalation via Weak PRNG
ExtremeXOS (EXOS) uses a challenge-response mechanism to authorize access to the privileged debug-mode function. The challenge value is generated using an insufficiently random source, which under certain conditions may allow an attacker to predict the expected response and activate debug-mode without authorization. Depending on device configuration and version, this may enable escalation to root-level access and persistent modification of the device software stack. Exploitation requires either a valid low-privilege account on the device (remote scenario) or physical serial console access (local scenario). This vulnerability is distinct from CVE-2017-14329, which addressed a different issue involving Python script privileges. 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.
| CWE | CWE-338 |
| Vendor | extreme networks |
| Product | switch engine (exos) |
| Published | Jul 20, 2026 |
| Last Updated | Jul 20, 2026 |
Get instant alerts for extreme networks switch engine (exos)
Be the first to know when new unknown vulnerabilities affecting extreme networks switch engine (exos) are published — delivered to Slack, Telegram or Discord.