Skip to content
Fencer Intel
high 8.8

CVE-2016-7200 kev in the critical feed json

ChakraCore RCE Vulnerability

published 2016-11-10 9 y ago modified 2026-06-17 4 mo ago also GHSA-5whg-j5fv-xcm2 , EUVD-2022-2667

cvss
8.8
version 3.1, CNA
cisa kev
Exploited
added 2022-03-28
epss
82.8%
EPSS 82.8% chance of exploitation in 30 days, percentile 99.6%
public exploits
2
Exploit-DB

Summary

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-2016-7201, CVE-2016-7202, CVE-2016-7203, CVE-2016-7208, CVE-2016-7240, CVE-2016-7242, and CVE-2016-7243.

Patch / fix

cisa required action Apply updates per vendor instructions.

  • nuget Microsoft.ChakraCore 1.2.2

Timeline

  1. Published
  2. First public exploit (EDB-40785)
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
4 y ago
Patch by
2022-04-18 (4 y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Microsoft, Edge
CISA name
Microsoft Edge Memory Corruption Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
20 mo ago

Exploit prediction

82.78% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-40990 Microsoft Edge (Windows 10) - 'chakra.dll' Information Leak / Type Confusion Remote Code Execution remote, 2017-01-05
  • EDB-40785 Microsoft Edge - 'Array.filter' Information Leak dos, 2016-11-18
  • github.com https://github.com/theori-io/chakra-2016-11 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/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
<1.2.2
1.2.2

Classification

Weakness
  • CWE-787 Out-of-bounds Write
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.