{"id":"CVE-2018-8139","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-8139","generatedAt":"2026-10-28T23:57:10.607Z","title":"A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge, aka \"Scripting Engine Memory Corruption Vulnerability.\" This affects Microsoft Edge, ChakraCore.","description":"A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge, aka \"Scripting Engine Memory Corruption Vulnerability.\" This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-0945, CVE-2018-0946, CVE-2018-0951, CVE-2018-0953, CVE-2018-0954, CVE-2018-0955, CVE-2018-1022, CVE-2018-8114, CVE-2018-8122, CVE-2018-8128, CVE-2018-8137.","published":"2018-05-09T19:29:02.000Z","lastModified":"2026-06-17T02:04:20.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.0","score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-125"],"affected":["microsoft/edge","microsoft/chakracore"],"epss":{"score":0.66313,"percentile":0.99276,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.61236,"percentile":0.99148},{"date":"2026-09-22","score":0.66845,"percentile":0.99259}]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2018-07-12","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":45012,"kind":"exploit","title":"Microsoft Edge Chakra JIT - BoundFunction::NewInstance Out-of-Bounds Read","url":"https://www.exploit-db.com/exploits/45012","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/dos/45012.js","file":"exploits/windows/dos/45012.js","published":"2018-07-12","added":"2018-07-12","updated":"2018-07-12","author":"Google Security Research","type":"dos","platform":"windows","port":null,"verified":true,"codes":["CVE-2018-8139"],"tags":"Out Of Bounds","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1569&desc=2"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 66.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-09-22T00:00:00.000Z","detail":{"to":0.66845,"from":0.61236,"percentile":0.99259},"summary":"EPSS moved from 61.2% to 66.8% probability of exploitation in the next thirty days."}],"references":[{"url":"http://www.securityfocus.com/bid/103977","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://www.securitytracker.com/id/1040844","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8139","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://www.exploit-db.com/exploits/45012/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/103977","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1040844","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8139","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/45012/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-8139","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."}