{"schemaVersion":3,"id":"CVE-2018-18913","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Opera before 57.0.3098.106 is vulnerable to a DLL Search Order hijacking attack where an attacker can send a ZIP archive composed of an HTML page along with a malicious DLL to the target. Once the document is opened, it may allow the attacker to take full control of the system from any location within the system. The issue lies in the loading of the shcore.dll and dcomp.dll files: these files are being searched for by the program in the same system-wide directory where the HTML file is executed.","dates":{"published":"2019-03-21T21:06:16.000Z","modified":"2024-08-05T11:23:08.550Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.8,"severity":"high","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":6.9,"severity":"medium","vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00402,"percentile":0.32946,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00402},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00402,"percentile":0.32946}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00402,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00402,"percentile":0.32946}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-426","name":"Untrusted Search Path","description":"The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/426.html"}],"affected":[{"vendor":"opera","product":"opera_browser","name":"opera browser","label":"opera_browser","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 57.0.3098.106","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 57.0.3098.106","eol":null,"hubHref":"/vendor/opera/opera_browser"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://lucideustech.blogspot.com/2019/02/opera-search-order-hijacking-cve-2018-18913.html","label":"lucideustech.blogspot.com/2019/02/opera-search-order-hijacking-cve-2018-18913.html","hostname":"lucideustech.blogspot.com","tags":["X Refsource MISC","Third Party Advisory"]},{"url":"https://blogs.opera.com/desktop/changelog-for-57/","label":"blogs.opera.com/desktop/changelog-for-57/","hostname":"blogs.opera.com","tags":["X Refsource CONFIRM","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2019-03-21T21:06:16.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T11:23:08.550Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":31,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T11:45:32.368Z","stale":false,"partial":false}}