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CVE-2018-8298

94
FAUCET Score

CVE-2018-8298 is a remote code execution vulnerability in the ChakraCore scripting engine, specifically a memory corruption flaw affecting Microsoft ChakraCore. This vulnerability has a high CVSS score of 7.5, indicating a network-based attack with high impact on confidentiality, integrity, and availability, though it requires user interaction and has high attack complexity. It is actively exploited in the wild, as confirmed by its presence in the KEV catalog, and has garnered significant community attention and media coverage. While no Metasploit or Nuclei exploits are publicly available, an ExploitDB entry details a type confusion exploit for Microsoft Edge Chakra JIT.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.10.1CPE matchmatch criteria
cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
75.34%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Mar 3, 2022
ExploitDB: EDB-45217 · Aug 17, 2018
This CVE's current EPSS score of 0.7534 is in the 99th percentile among its peer group of 1,570 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.2 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.6 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: ChakraCore
View patch
nugetpatch availablevia ghsa
Product: Microsoft.ChakraCoreFixed in: 1.10.1

Vendor Advisories (2)

nugetGHSA-wgw2-wwq8-c7wfhigh

ChakraCore RCE Vulnerability

May 13, 2022
microsoft2018-Jul/CVE-2018-8298Critical

Scripting Engine Memory Corruption Vulnerability

Jul 10, 2018

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8298
PatchVendor Advisory
exploit-db.com / exploits/45217
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / bid/104639
Broken LinkThird Party AdvisoryVDB Entry