CVE-2026-8169
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.7
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- EPSS probability
- 0.38%
- CWE
- CWE-338
- Published
- 2026-07-20
- Last modified
- 2026-07-20
Affected products
- Extreme Networks Switch Engine (EXOS)
- Extreme Networks Switch Engine (EXOS)
- Extreme Networks Switch Engine (EXOS)
- Extreme Networks Switch Engine (EXOS)
Weakness type
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