CVE-2018-8288

ChakraCore RCE Vulnerability

7.5 HighPublic exploitFix available

CVE-2018-8288 is a high vulnerability (CVSS 7.5) in Microsoft Chakracore, published July 11, 2018. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 69.2%, the 99th percentile. Fixed in Microsoft.ChakraCore 1.10.1.

A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge. This CVE ID is unique from CVE-2018-8242, CVE-2018-8283, CVE-2018-8287, CVE-2018-8291, CVE-2018-8296, CVE-2018-8298.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

69.2%Up 13.7 points since Apr 14, 2021

What each source reports

NVD Score used 7.5

Record: CVE-2018-8288
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 7.6 HighAV:N/AC:H/Au:N/C:C/I:C/A:C
Weakness: CWE-787
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-8288
Updated: 2026-11-02

EUVDEUVD-2022-2365 No score

Record: EUVD-2022-2365
Updated: 2026-11-03

GitHub AdvisoriesGHSA-4f79-fxh8-vgq2 7.5

ChakraCore RCE Vulnerability

Record: GHSA-4f79-fxh8-vgq2
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-787
Updated: 2026-11-02

OSV 7.5

Record: CVE-2018-8288
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-4f79-fxh8-vgq2 7.5

ChakraCore RCE Vulnerability

Record: GHSA-4f79-fxh8-vgq2
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-787
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`Microsoft.ChakraCore` NuGet	before 1.10.1	1.10.1
`Microsoft.ChakraCore` NuGet	before 1.10.1, plus listed versions 1.10.01.2.01.2.11.2.21.2.3 Show 29 moreShow less 1.2.6.62716-preview1.3.01.3.11.3.21.4.01.4.11.4.21.4.31.4.41.4.51.5.01.5.11.5.21.5.31.6.01.6.21.7.01.7.11.7.21.7.31.7.41.7.51.7.61.8.01.8.11.8.21.8.31.8.41.8.5	1.10.1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Microsoft Edge Chakra JIT - ImplicitCallFlags Check Bypass with Intl	2018-08-17

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

References

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