CVE-2025-8679

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Extreme NetworksExtremeGuest Essentials25.4.0affected

Weaknesses

  • CWE-307: CWE-307 Improper Restriction of Excessive Authentication Attempts

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References