{"id":"CVE-2017-8658","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-8658","generatedAt":"2026-10-28T23:09:55.106Z","title":"A remote code execution vulnerability exists in the way that the Chakra JavaScript engine renders when handling objects in memory, aka \"Scripting Engine Memory Corruption Vulnerability\".","description":"A remote code execution vulnerability exists in the way that the Chakra JavaScript engine renders when handling objects in memory, aka \"Scripting Engine Memory Corruption Vulnerability\".","published":"2017-08-11T01:29:02.000Z","lastModified":"2026-06-17T01:26:45.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-119"],"affected":["microsoft/chakracore"],"epss":{"score":0.20066,"percentile":0.97431,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.18754,"percentile":0.97213},{"date":"2026-09-22","score":0.20066,"percentile":0.97328}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 20.1%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/100036","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8658","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/100036","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8658","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-8658","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."}