{"id":"CVE-2025-8679","state":"PUBLISHED","title":"ExtremeGuest Essentials Captive Portal Unauthenticated Brute Force","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.","publishedAt":"2025-10-01T17:19:16.743Z","updatedAt":"2025-10-01T17:29:42.134Z","severity":{"score":7.6,"label":"High","version":"4.0","vector":"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","source":"ExtremeNetworks"},"assigner":"ExtremeNetworks","products":["Extreme Networks ExtremeGuest Essentials"],"affected":[{"vendor":"Extreme Networks","product":"ExtremeGuest Essentials","defaultStatus":"affected","versions":[{"version":"25.4.0","status":"affected"}]}],"references":["https://extreme-networks.my.site.com/ExtrArticleDetail?an=000130289"],"weaknesses":["CWE-307"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/8xxx/CVE-2025-8679.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-8679","state":"PUBLISHED","datePublished":"2025-10-01T17:19:16.743Z","dateUpdated":"2025-10-01T17:29:42.134Z","assignerShortName":"ExtremeNetworks","assignerOrgId":"1c053176-eef3-4d6a-ae0b-24728c86587b","dateReserved":"2025-08-06T18:32:44.244Z"},"containers":{"cna":{"title":"ExtremeGuest Essentials Captive Portal Unauthenticated Brute Force","descriptions":[{"lang":"en","value":"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":[{"vendor":"Extreme Networks","product":"ExtremeGuest Essentials","defaultStatus":"affected","versions":[{"version":"25.4.0","status":"affected"}]}],"references":[{"url":"https://extreme-networks.my.site.com/ExtrArticleDetail?an=000130289"}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.6,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-307","description":"CWE-307 Improper Restriction of Excessive Authentication Attempts","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"ExtremeNetworks","orgId":"1c053176-eef3-4d6a-ae0b-24728c86587b","dateUpdated":"2025-10-01T17:19:16.743Z"},"datePublic":"2025-10-01T17:00:00.000Z","impacts":[{"capecId":"CAPEC-112","descriptions":[{"lang":"en","value":"CAPEC-112 Brute Force"}]}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<div><div><div><p>Fixed in 25.5.0 or later.</p></div></div></div>"}],"value":"Fixed in 25.5.0 or later."}],"source":{"advisory":"SA-2025-114","discovery":"USER"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T17:29:33.624086Z","id":"CVE-2025-8679","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T17:29:42.134Z"}}]}}}