{"id":"CVE-2017-8640","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-8640","generatedAt":"2026-10-28T19:47:33.027Z","title":"Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user due to the way that Microsoft browser JavaScript engines render content when handling objects in…","description":"Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user due to the way that Microsoft browser JavaScript engines render content when handling objects in memory, aka \"Scripting Engine Memory Corruption Vulnerability\". This CVE ID is unique from CVE-2017-8634, CVE-2017-8635, CVE-2017-8636, CVE-2017-8638, CVE-2017-8639, CVE-2017-8641, CVE-2017-8645, CVE-2017-8646, CVE-2017-8647, CVE-2017-8655, CVE-2017-8656, CVE-2017-8657, CVE-2017-8670, CVE-2017-8671, CVE-2017-8672, and CVE-2017-8674.","published":"2017-08-08T21:29:01.000Z","lastModified":"2026-06-17T01:26:43.000Z","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-119"],"affected":["microsoft/edge"],"epss":{"score":0.69277,"percentile":0.99355,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.56844,"percentile":0.99046},{"date":"2026-09-22","score":0.69277,"percentile":0.99326}]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2017-08-17","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":42476,"kind":"exploit","title":"Microsoft Edge Chakra - Uninitialized Arguments (1)","url":"https://www.exploit-db.com/exploits/42476","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/dos/42476.html","file":"exploits/windows/dos/42476.html","published":"2017-08-17","added":"2017-08-17","updated":"2017-08-18","author":"Google Security Research","type":"dos","platform":"windows","port":null,"verified":true,"codes":["CVE-2017-8640"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1297"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 69.3%, 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":0.69277,"from":0.56844,"percentile":0.99326},"summary":"EPSS moved from 56.8% to 69.3% probability of exploitation in the next thirty days."}],"references":[{"url":"http://www.securityfocus.com/bid/100051","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://www.securitytracker.com/id/1039095","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8640","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://www.exploit-db.com/exploits/42476/","source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/100051","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1039095","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8640","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/42476/","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-8640","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."}