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CVE-2018-8280

31
FAUCET Score

CVE-2018-8280 is a remote code execution vulnerability in the Chakra scripting engine affecting Microsoft Edge and ChakraCore, stemming from improper handling of objects in memory. It carries a high CVSS score of 7.5, indicating a network-based attack requiring user interaction, with high impact on confidentiality, integrity, and availability. While not listed in CISA's KEV catalog and lacking public exploit code, its high EPSS and FAUCET Risk Score, along with community and media mentions, suggest significant potential risk.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*
<= 1.10.0CPE 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
19.23%
Probability of exploitation in next 30 days
EPSS Percentile
97.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1923 is in the 89th 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 (25)

microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows Server 2016
View patch
microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 10724-10951
View patch
microsoftpatch availablevia msrc
Product: 10724-10952
View patch
microsoftpatch availablevia msrc
Product: 10724-11497
View patch
microsoftpatch availablevia msrc
Product: 10724-11498
View patch
microsoftpatch availablevia msrc
Product: 10724-11453
View patch
microsoftpatch availablevia msrc
Product: 10724-11454
View patch
microsoftpatch availablevia msrc
Product: 10724-10729
View patch
microsoftpatch availablevia msrc
Product: 10724-10735
View patch
microsoftpatch availablevia msrc
Product: 10724-10852
View patch
microsoftpatch availablevia msrc
Product: 10724-10853
View patch
microsoftpatch availablevia msrc
Product: 10724-10816
View patch
microsoftpatch availablevia msrc
Product: ChakraCore
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems
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: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems
View patch
nugetpatch availablevia ghsa
Product: Microsoft.ChakraCoreFixed in: 1.10.1

Vendor Advisories (2)

nugetGHSA-wwm6-r38h-ppg7high

ChakraCore RCE Vulnerability

May 13, 2022
microsoft2018-Jul/CVE-2018-8280Critical

Chakra Scripting Engine Memory Corruption Vulnerability

Jul 10, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8280
PatchVendor Advisory
securityfocus.com / bid/104642
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041256
Third Party AdvisoryVDB Entry