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Vulnerability record · CVE-2017-8658 · published 11 August 2017

CVE-2017-8658: Microsoft chakracore memory buffer overflow vulnerability

Microsoft · Chakracore

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".

9.8 CVSS 3.0 Critical EPSS 20% · top 2.6% CWE-119 · Memory buffer overflow
9.8CVSS 3.0 base score, v2 10.0
20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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".

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/100036 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8658 PatchVendor Advisory
http://www.securityfocus.com/bid/100036 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8658 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2018-8298ChakraCore scripting engine type confusion allows remote code executionChakraCore mishandles objects in memory in a way that leads to type confusion (CWE-843), which the vendor classifies as a remote code execution vulne…KEVEPSS 75%analysed4.2CVE-2020-0878Microsoft browsers memory corruption remote code executionMicrosoft Internet Explorer, Edge and ChakraCore mishandle objects in memory, allowing memory corruption via an out-of-bounds write (CWE-787). A craf…KEVEPSS 2.7%analysed9.8CVE-2018-8500Microsoft chakracore out-of-bounds write vulnerabilityA remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka "Scripting Engine Memory …EPSS 18%9.8CVE-2017-11767Microsoft chakracore memory buffer overflow vulnerabilityChakraCore allows an attacker to gain the same user rights as the current user, due to the way that the ChakraCore scripting engine handles objects i…EPSS 9.5%8.8CVE-2020-1555Microsoft edge out-of-bounds write vulnerabilityA remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge (HTML-based). The vulne…EPSS 4.5%8.1CVE-2020-1073Microsoft edge out-of-bounds write vulnerabilityA remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory …EPSS 8.6%8.1CVE-2019-0649Microsoft edge vulnerabilityA vulnerability exists in Microsoft Chakra JIT server, aka 'Scripting Engine Elevation of Privileged Vulnerability'.EPSS 4.3%7.5CVE-2020-23315Microsoft chakracore vulnerabilityThere is an ASSERTION (pFuncBody->GetYieldRegister() == oldYieldRegister) failed in Js::DebugContext::RundownSourcesAndReparse in ChakraCore version …EPSS 2.4%

Source: NIST National Vulnerability Database (record CVE-2017-8658), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.