{"id":"CVE-2025-15681","state":"PUBLISHED","title":"Insufficient Webserver Authentication","description":"TBEA TLogger V2.1.0.0B0.0.0.0 contains an authentication bypass in its web server. After a user has previously authenticated to the device, an unauthenticated attacker can directly access protected functionality through the /index.asp endpoint without providing valid credentials. This allows the attacker to access functionality intended for authenticated users and may expose or modify device configuration and data. Logging out from the bypassed state can additionally cause the web server to crash.","publishedAt":"2026-08-10T19:31:05.467Z","updatedAt":"2026-08-12T18:13:49.621Z","severity":{"score":9.2,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"CyberDanube"},"assigner":"CyberDanube","products":["TBEA TBEA TLogger (TBEA Communication Box 3rd Generation)"],"affected":[{"vendor":"TBEA","product":"TBEA TLogger (TBEA Communication Box 3rd Generation)","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"V2.1.0.0B0.0.0.0","versionType":"custom"}]}],"references":["https://en.tbea.com/about.html"],"weaknesses":["CWE-306"],"ingestedAt":"2026-10-29T20:08:31.050Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/15xxx/CVE-2025-15681.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-15681","state":"PUBLISHED","datePublished":"2026-08-10T19:31:05.467Z","dateUpdated":"2026-08-12T18:13:49.621Z","assignerShortName":"CyberDanube","assignerOrgId":"7d092a75-6bbd-48c6-a15a-0297458009bc","dateReserved":"2026-08-04T11:34:47.562Z"},"containers":{"cna":{"title":"Insufficient Webserver Authentication","descriptions":[{"lang":"en","value":"TBEA TLogger V2.1.0.0B0.0.0.0 contains an authentication bypass in its web server. After a user has previously authenticated to the device, an unauthenticated attacker can directly access protected functionality through the /index.asp endpoint without providing valid credentials. This allows the attacker to access functionality intended for authenticated users and may expose or modify device configuration and data. Logging out from the bypassed state can additionally cause the web server to crash."}],"affected":[{"vendor":"TBEA","product":"TBEA TLogger (TBEA Communication Box 3rd Generation)","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"V2.1.0.0B0.0.0.0","versionType":"custom"}]}],"references":[{"url":"https://en.tbea.com/about.html"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"CRITICAL","baseScore":9.2,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306 Missing authentication for critical function","type":"CWE"}]}],"providerMetadata":{"shortName":"CyberDanube","orgId":"7d092a75-6bbd-48c6-a15a-0297458009bc","dateUpdated":"2026-08-10T19:31:05.467Z"},"impacts":[{"capecId":"CAPEC-115","descriptions":[{"lang":"en","value":"CAPEC-115 Authentication Bypass"}]}],"credits":[{"lang":"en","value":"S. Eisenreich-Dietz (CyberDanube)","type":"finder"},{"lang":"en","value":"T. Weber (CyberDanube)","type":"finder"},{"lang":"en","value":"F. Koroknai","type":"finder"},{"lang":"en","value":"D. Blagojevic","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.4"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-12T18:10:51.494985Z","id":"CVE-2025-15681","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-12T18:13:49.621Z"}}]}}}