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Fencer Intel
high 7.5

CVE-2018-0859 in the critical feed json

ChakraCore RCE Vulnerability

published 2018-02-15 8 y ago modified 2026-06-17 4 mo ago also GHSA-9pvj-pgg9-pvqq , EUVD-2022-3427

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
17.7%
EPSS 17.7% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

Microsoft Edge and ChakraCore in Microsoft Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0840, CVE-2018-0856, CVE-2018-0857, CVE-2018-0858, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.

Patch / fix

  • nuget Microsoft.ChakraCore 1.8.1

Exploit prediction

17.73% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • securityfocus.com http://www.securityfocus.com/bid/102882 referenced PoC, tagged "exploit" by a source, unverified

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
<1.8.1
1.8.1

Affected products

  • Microsoft Corporation Microsoft Edge, ChakraCore

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.