ChakraCore RCE Vulnerability

Also known as GHSA-c6mx-gwgr-mfm2

Published 8 y ago 2018-04-12 · modified 4 mo ago 2026-06-17 · JSON

CVSS

7.5

v3.0 · NVD

CISA KEV

not known exploited

EPSS

15.4%

percentile 97%

Public exploits

none known

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-0979, CVE-2018-0980, CVE-2018-0990, CVE-2018-0993, CVE-2018-0994, CVE-2018-1019.

Exploit prediction (EPSS)

15.43% probability of exploitation in the next 30 days, higher than 97% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	7.5	`CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`
NVD	2.0	7.6	`AV:N/AC:H/Au:N/C:C/I:C/A:C`
GitHub	3.0	7.5	`CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`

Affected packages

Ecosystem	Package	Affected	Fixed in
nuget	`Microsoft.ChakraCore`	<1.8.3	1.8.3

Affected products

Microsoft Microsoft Edge
Microsoft ChakraCore

Classification

Weakness

CWE-787 Out-of-bounds Write

References

securityfocus.com /bid/103631 · vdb-entry, x_refsource_BID, x_transferred
securitytracker.com /id/1040650 · vdb-entry, x_refsource_SECTRACK, x_transferred
portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2018-0995 · x_refsource_CONFIRM, x_transferred
nvd.nist.gov /vuln/detail/CVE-2018-0995 · advisory
github.com /chakra-core/ChakraCore/commit/396d78f60a3d8444218253523365965f97942225 · web
github.com /chakra-core/ChakraCore · package
web.archive.org /web/20210125210155/http://www.securityfocus.com/bid/103631 · web
web.archive.org /web/20211207123630/http://www.securitytracker.com/id/1040650 · web

Sources

CVE List: CVE-2018-0995
GitHub Advisory: GHSA-c6mx-gwgr-mfm2
NVD: CVE-2018-0995

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary