{"id":"CVE-2001-1436","aliases":["EUVD-2001-1416","GHSA-g6p6-xc86-g98v"],"status":"published","title":"Dallas Semiconductor iButton DS1991 returns predictable values when given an incorrect password,...","description":"Dallas Semiconductor iButton DS1991 returns predictable values when given an incorrect password, which makes it easier for users with physical access to conduct dictionary attacks against the device password.","severity":{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00471,"percentile":0.40959,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2001-01-18T05:00:00Z","modified":"2026-06-16T21:56:16Z","products":[{"vendor":"dallas_semiconductor","product":"ibutton"}],"references":[{"url":"http://www.atstake.com/research/advisories/2001/a011801-1.txt","tags":["vendor-advisory","x_refsource_ATSTAKE","x_transferred","Exploit","Vendor Advisory"]},{"url":"http://www.kb.cert.org/vuls/id/178560","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Exploit","Third Party Advisory","US Government Resource"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/10625","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2001-1436"},{"url":"https://github.com/advisories/GHSA-g6p6-xc86-g98v"}],"sources":{"cve":[{"id":"CVE-2001-1436","description":"Dallas Semiconductor iButton DS1991 returns predictable values when given an incorrect password, which makes it easier for users with physical access to conduct dictionary attacks against the device password.","status":"published","published":"2005-04-21T04:00:00Z","modified":"2024-08-08T04:58:11.44Z","updated_at":"2026-11-02T14:34:42.680977Z"}],"euvd":[{"id":"EUVD-2001-1416","description":"Dallas Semiconductor iButton DS1991 returns predictable values when given an incorrect password, which makes it easier for users with physical access to conduct dictionary attacks against the device password.","status":"published","published":"2005-04-21T04:00:00Z","modified":"2024-08-08T04:58:11Z","updated_at":"2026-11-03T00:56:27.245824Z"}],"ghsa":[{"id":"GHSA-g6p6-xc86-g98v","title":"Dallas Semiconductor iButton DS1991 returns predictable values when given an incorrect password,...","description":"Dallas Semiconductor iButton DS1991 returns predictable values when given an incorrect password, which makes it easier for users with physical access to conduct dictionary attacks against the device password.","status":"published","published":"2022-04-30T18:18:01Z","modified":"2023-01-30T05:05:21Z","updated_at":"2026-11-02T14:47:15.400856Z"}],"nvd":[{"id":"CVE-2001-1436","description":"Dallas Semiconductor iButton DS1991 returns predictable values when given an incorrect password, which makes it easier for users with physical access to conduct dictionary attacks against the device password.","status":"published","published":"2001-01-18T05:00:00Z","modified":"2026-06-16T21:56:16.347Z","cvss":[{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:00:39.593487Z"}]}}