{"schemaVersion":3,"id":"CVE-2018-12103","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An issue was discovered on D-Link DIR-890L with firmware 1.21B02beta01 and earlier, DIR-885L/R with firmware 1.21B03beta01 and earlier, and DIR-895L/R with firmware 1.21B04beta04 and earlier devices (all hardware revisions). Due to the predictability of the /docs/captcha_(number).jpeg URI, being local to the network, but unauthenticated to the administrator's panel, an attacker can disclose the CAPTCHAs used by the access point and can elect to load the CAPTCHA of their choosing, leading to unauthorized login attempts to the access point.","dates":{"published":"2018-07-05T20:00:00.000Z","modified":"2024-08-05T08:24:03.699Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":3.3,"severity":"low","vector":"AV:A/AC:L/Au:N/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00452,"percentile":0.38207,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.10999999999999999,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00342},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00342,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00452,"percentile":0.38207}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00342,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00452,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00452,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Authorization","description":"The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/863.html"}],"affected":[{"vendor":"d-link","product":"dir-885l\\/r_firmware","name":"dir-885l\\/r firmware","label":"dir-885l\\/r_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≤ 1.21b03beta01","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 1.21b03beta01","eol":null,"hubHref":"/vendor/d-link/dir-885lr"},{"vendor":"d-link","product":"dir-895l\\/r_firmware","name":"dir-895l\\/r firmware","label":"dir-895l\\/r_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≤ 1.21b04beta01","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 1.21b04beta01","eol":null,"hubHref":"/vendor/d-link/dir-895lr"},{"vendor":"dlink","product":"dir-890l_firmware","name":"dir-890l firmware","label":"dir-890l_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≤ 1.21b02beta01","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 1.21b02beta01","eol":null,"hubHref":"/vendor/dlink/dir-890l"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099","label":"securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099","hostname":"securityadvisories.dlink.com","tags":["X Refsource CONFIRM","Vendor Advisory"]},{"url":"http://seclists.org/fulldisclosure/2018/Jul/13","label":"seclists.org/fulldisclosure/2018/Jul/13","hostname":"seclists.org","tags":["Mailing List","X Refsource FULLDISC","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2018-07-05T20:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T08:24:03.699Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T14:10:45.815Z","stale":false,"partial":false}}