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CVE-2018-8380

30
FAUCET Score

CVE-2018-8380 describes a remote code execution vulnerability within the Chakra scripting engine, affecting Microsoft Edge and ChakraCore, due to improper handling of objects in memory. 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 listed in CISA's KEV catalog and lacking public exploit intelligence (Metasploit, Nuclei, ExploitDB), it has garnered significant community discussion and media coverage, indicating awareness despite no confirmed active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.10.1CPE matchmatch criteria
cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*

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
14.44%
Probability of exploitation in next 30 days
EPSS Percentile
96.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1444 is in the 81st 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 (7)

microsoftpatch availablevia msrc
Product: 10724-11498
View patch
microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 10724-11497
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: ChakraCore
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems
View patch
nugetpatch availablevia ghsa
Product: Microsoft.ChakraCoreFixed in: 1.10.2

Vendor Advisories (2)

nugetGHSA-rxg4-vw2v-rxm4high

ChakraCore remote code execution vulnerability

May 13, 2022
microsoft2018-Aug/CVE-2018-8380Critical

Chakra Scripting Engine Memory Corruption Vulnerability

Aug 14, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8380
PatchVendor Advisory
securityfocus.com / bid/104979
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041457
Third Party AdvisoryVDB Entry