{"id":"CVE-2018-12885","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-12885","generatedAt":"2026-10-29T04:41:55.286Z","title":"Therefore, attackers can get powerful champs/items and get rewards.","description":"The randMod() function of the smart contract implementation for MyCryptoChamp, an Ethereum game, generates a random value with publicly readable variables such as the current block information and a private variable, (which can be read with a getStorageAt call). Therefore, attackers can get powerful champs/items and get rewards.","published":"2018-08-07T15:29:01.000Z","lastModified":"2026-06-17T01:38:30.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-338"],"affected":["mycryptochamp/mycryptochamp"],"epss":{"score":0.01387,"percentile":0.72152,"date":"2026-10-28","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 (1.39%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://etherscan.io/address/0x689FB61845488297dfE7586E5f7956475955d2Dc","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://etherscan.io/address/0xa44e464b13280340904ffef0a65b8a0033460430","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://medium.com/coinmonks/get-legendary-items-by-breaking-pnrg-of-mycyptochamp-an-ethereum-online-game-cve-2018-12855-6e6beb41b8df","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://etherscan.io/address/0x689FB61845488297dfE7586E5f7956475955d2Dc","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://etherscan.io/address/0xa44e464b13280340904ffef0a65b8a0033460430","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://medium.com/coinmonks/get-legendary-items-by-breaking-pnrg-of-mycyptochamp-an-ethereum-online-game-cve-2018-12855-6e6beb41b8df","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-12885","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."}