CVE-2016-7201

ChakraCore RCE Vulnerability

8.8 HighIn KEVPublic exploitFix available

The Chakra JavaScript scripting engine in Microsoft Edge allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-7200, CVE-2016-7202, CVE-2016-7203, CVE-2016-7208, CVE-2016-7240, CVE-2016-7242, and CVE-2016-7243.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

80.0%Down 11.1 points since Feb 4, 2022

What each source reports

NVD Score used 8.8

Record: CVE-2016-7201
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/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-843
Updated: 2026-11-02

CVE List 8.8

Record: CVE-2016-7201
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-843
Updated: 2026-11-02

EUVDEUVD-2022-2363 8.8

Record: EUVD-2022-2363
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-4f5g-j7wg-7w8j 7.7

ChakraCore RCE Vulnerability

Record: GHSA-4f5g-j7wg-7w8j
CVSS 4.0: 7.7 HighCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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-119, CWE-843
Updated: 2026-11-02

CISA KEV No score

Microsoft Edge Memory Corruption Vulnerability

The Chakra JavaScript scripting engine in Microsoft Edge allows remote attackers to execute remote code or cause a denial of service (memory corruption) via a crafted web site.

Record: CVE-2016-7201
Weakness: CWE-119
Updated: 2026-11-02

OSVGHSA-4f5g-j7wg-7w8j 7.7

ChakraCore RCE Vulnerability

Record: GHSA-4f5g-j7wg-7w8j
CVSS 4.0: 7.7 HighCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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-119, CWE-843
Updated: 2026-11-02

Affected products

microsoft edge

Affected packages

Affected packages
Package	Affected	Fixed
`Microsoft.ChakraCore` NuGet	before 1.2.2	1.2.2
`Microsoft.ChakraCore` NuGet	before 1.2.2, plus listed versions 1.2.01.2.1	1.2.2

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Microsoft Edge - 'FillFromPrototypes' Type Confusion	2016-11-18
Exploit-DB	Microsoft Edge (Windows 10) - 'chakra.dll' Information Leak / Type Confusion Remote Code Execution	2017-01-05

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, Exploit-DB, GitHub Advisories, CISA KEV, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-7201 is a high vulnerability (CVSS 8.8) in Microsoft Edge, published November 10, 2016. CISA lists it as known to be exploited, since March 28, 2022. EUVD reports exploitation since March 28, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 80.0%, the 99th percentile. Fixed in Microsoft.ChakraCore 1.2.2.

References

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