{"id":"CVE-2018-12103","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-12103","generatedAt":"2026-10-28T20:12:21.367Z","title":"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…","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.","published":"2018-07-05T20:29:00.000Z","lastModified":"2026-06-17T01:37:10.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","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"},"cwe":["CWE-863"],"affected":["dlink/dir-890l firmware","d-link/dir-885l\\/r firmware","d-link/dir-895l\\/r firmware"],"epss":{"score":0.00452,"percentile":0.39078,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://seclists.org/fulldisclosure/2018/Jul/13","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2018/Jul/13","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-12103","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}