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CVE-2018-8513

31
FAUCET Score

CVE-2018-8513 is a remote code execution vulnerability found in the Chakra scripting engine, affecting Microsoft Edge and ChakraCore. This memory corruption flaw allows an attacker to execute arbitrary code on a vulnerable system. With a CVSS score of 7.5 (High), exploitation requires user interaction (e.g., visiting a malicious website) and has high impacts on confidentiality, integrity, and availability. While no public exploit code or active exploitation has been confirmed, its EPSS and FAUCET scores indicate a significant risk, and it has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE 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
14.61%
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 0.1461 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 (11)

microsoftpatch availablevia msrc
Product: 10724-11570
View patch
microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: ChakraCore
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows Server 2019
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: 10724-11569
View patch
microsoftpatch availablevia msrc
Product: 10724-11568
View patch
microsoftpatch availablevia msrc
Product: 10724-11571
View patch
nugetpatch availablevia ghsa
Product: Microsoft.ChakraCoreFixed in: 1.11.2

Vendor Advisories (2)

nugetGHSA-3hqw-mg9x-r2vrhigh

ChakraCore RCE Vulnerability

May 13, 2022
microsoft2018-Oct/CVE-2018-8513Critical

Chakra Scripting Engine Memory Corruption Vulnerability

Oct 9, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8513
PatchVendor Advisory
securityfocus.com / bid/105473
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041825
Third Party AdvisoryVDB Entry