CVE-2026-8169
Description
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.
How to fix
- Extreme Networks Switch Engine (EXOS)31.7.4, 32.7.4.15, 33.1.100, 33.7.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Extreme Networks Switch Engine (EXOS) | v < 31.7.4, 32.0.0 ≤ v < 32.7.4.15, 33.0.0 ≤ v < 33.1.100, 33.2.0 ≤ v < 33.7.1 | 31.7.4, 32.7.4.15, 33.1.100, 33.7.1 |
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