CVE-2025-8679
ExtremeGuest Essentials Captive Portal Unauthenticated Brute Force
- State
- Published
- Severity
- 7.6 High
- Published
- Oct 1, 2025
- Updated
- Oct 1, 2025
- Reserved
- Aug 6, 2025
Description
In ExtremeGuest Essentials before 25.5.0, captive-portal may permit unauthorized access via manual brute-force procedure. Under certain ExtremeGuest Essentials captive-portal SSID configurations, repeated manual login attempts may allow an unauthenticated device to be marked as authenticated and obtain network access. Client360 logs may display the client MAC as the username despite no MAC-authentication being enabled.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.6 High | CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | ExtremeNetworks |
Weaknesses
- CWE-307 Improper Restriction of Excessive Authentication Attempts
Affected Products
| Product | Versions |
|---|---|
ExtremeGuest EssentialsExtreme Networks |
|
References
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