{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-121818","assignerOrgId":"cded6c7f-6ce5-4948-8f87-aa7a3bbb6b0e","state":"PUBLISHED","assignerShortName":"twcert","dateReserved":"2026-11-04T05:40:25.201Z","datePublished":"2026-11-04T06:26:53.550Z","dateUpdated":"2026-11-04T20:00:58.496Z"},"containers":{"cna":{"providerMetadata":{"orgId":"cded6c7f-6ce5-4948-8f87-aa7a3bbb6b0e","shortName":"twcert","dateUpdated":"2026-11-04T06:56:13.525Z"},"title":"About Time Technologies｜Herowatch Go - Security Misconfiguration","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-1394","description":"CWE-1394 Use of Default Cryptographic Key","type":"CWE"}]}],"affected":[{"vendor":"About Time Technologies","product":"Herowatch Go","versions":[{"status":"affected","version":"all","versionType":"custom"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"Herowatch Mini developed by About Time Technologies has a system signing vulnerability. Authenticated local attackers can exploit a publicly available test key to sign malicious programs, allowing them to elevate privileges and execute arbitrary code.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Herowatch Mini developed by About Time Technologies has a system signing vulnerability. Authenticated local attackers can exploit a publicly available test key to sign malicious programs, allowing them to elevate privileges and execute arbitrary code.</p>"}]}],"references":[{"url":"https://www.twcert.org.tw/en/cp-139-11362-1e829-2.html","tags":["third-party-advisory"]},{"url":"https://www.twcert.org.tw/tw/cp-132-11360-ab123-1.html","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","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":"HIGH","baseScore":8.5,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":7.8,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}],"solutions":[{"lang":"en","value":"The product is no longer maintained. Users are advised to replace it with a supported device.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>The product is no longer maintained. Users are advised to replace it with a supported device.</p>"}]}],"source":{"advisory":"TVN-202611003","discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-121818","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-11-04T18:28:13.244033Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-04T20:00:58.496Z"}}]}}