CVE-2016-3199

ChakraCore RCE Vulnerability

8.8 HighFix available

The Chakra JavaScript 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-2016-3214.

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

26.6%Up 4.0 points since Feb 4, 2022

What each source reports

NVD Score used 8.8

Record: CVE-2016-3199
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-3199
Updated: 2026-11-02

EUVDEUVD-2022-5349 No score

Record: EUVD-2022-5349
Updated: 2026-11-03

GitHub AdvisoriesGHSA-vfjw-crcq-q92v 8.8

ChakraCore RCE Vulnerability

Record: GHSA-vfjw-crcq-q92v
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-119
Updated: 2026-11-02

OSVGHSA-vfjw-crcq-q92v 8.8

ChakraCore RCE Vulnerability

Record: GHSA-vfjw-crcq-q92v
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-119
Updated: 2026-11-02

Affected products

microsoft edge

Affected packages

Affected packages
Package	Affected	Fixed
`Microsoft.ChakraCore` NuGet	before 1.2.0.0	1.2.0.0

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2016-3199 is a high vulnerability (CVSS 8.8) in Microsoft Edge, published June 16, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 26.6%, the 98th percentile. Fixed in Microsoft.ChakraCore 1.2.0.0.