CVE-2025-8679

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published10/1/2025

Last Modified1/15/2026

Sourcenvd

Honeypot Sightings0

Affected Products

extremenetworks:extremeguest_essentials

Weaknesses (CWE)

CWE-307

References

https://extreme-networks.my.site.com/ExtrArticleDetail?an=000130289(1c053176-eef3-4d6a-ae0b-24728c86587b)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.