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Fencer Intel
high 7.5

CVE-2018-8298 kev in the critical feed json

ChakraCore RCE Vulnerability

published 8y ago modified 4mo ago also GHSA-wgw2-wwq8-c7wf , EUVD-2022-5575

cvss
7.5
version 3.1, CNA
cisa kev
Exploited
added 2022-03-03
epss
74.7%
EPSS 74.7% chance of exploitation in 30 days, percentile 99.5%
public exploits
1
Exploit-DB

Summary

A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore. This CVE ID is unique from CVE-2018-8242, CVE-2018-8283, CVE-2018-8287, CVE-2018-8288, CVE-2018-8291, CVE-2018-8296.

Patch / fix

cisa required action Apply updates per vendor instructions.

  • nuget Microsoft.ChakraCore 1.10.1
  • microsoft chakracore 1.10.1

Is CVE-2018-8298 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Timeline

  1. Published
  2. First public exploit (EDB-45217)
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
4y ago
Patch by
2022-03-17 (4y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
ChakraCore, ChakraCore scripting engine
CISA name
ChakraCore Scripting Engine Type Confusion Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

74.69% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-45217 Microsoft Edge Chakra JIT - InitializeNumberFormat and InitializeDateTimeFormat Type Confusion dos, 2018-08-17

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.5 CVSS:3.1/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/E:H

Affected packages

ecosystem package affected fixed in
nuget Microsoft.ChakraCore
<1.10.1
1.10.1

Affected products

  • Microsoft ChakraCore

Classification

Weakness
  • CWE-843 Access of Resource Using Incompatible Type

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.