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CVE-2018-8384

69
FAUCET Score

CVE-2018-8384 is a remote code execution vulnerability affecting the Chakra scripting engine in Microsoft Edge and ChakraCore, stemming from memory corruption. This high-severity vulnerability (CVSS 7.5) can be exploited remotely with high impact on confidentiality, integrity, and availability, though it requires user interaction and has high attack complexity. While not actively exploited in the wild (not in KEV), a proof-of-concept exploit (EDB-45431) exists, and it has garnered significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:chakracore:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
62.11%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-45431 · Sep 18, 2018
This CVE's current EPSS score of 0.6211 is in the 95th percentile among its peer group of 1,572 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.4 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: 1.10.2

Vendor Advisories (2)

nugetGHSA-ggvv-6v25-r49rhigh

ChakraCore RCE Vulnerability

May 13, 2022
microsoft2018-Aug/CVE-2018-8384Critical

Scripting Engine Memory Corruption Vulnerability

Aug 14, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8384
PatchVendor Advisory
exploit-db.com / exploits/45431
Third Party AdvisoryVDB Entry
securityfocus.com / bid/104981
Third Party AdvisoryVDB Entry