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CVE-2018-8177

28
FAUCET Score

CVE-2018-8177 is a remote code execution vulnerability found in the Chakra scripting engine, specifically affecting Microsoft Edge and ChakraCore, due to improper handling of objects in memory. This vulnerability carries a high CVSS score of 7.5, indicating a significant risk where an attacker could achieve full compromise (confidentiality, integrity, availability) with high impact, though requiring user interaction and high attack complexity. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), it has garnered some community and media attention, including coverage in a BleepingComputer article regarding Microsoft's May 2018 Patch Tuesday.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*
<= 1.8.3CPE 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
11.40%
Probability of exploitation in next 30 days
EPSS Percentile
95.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1140 is in the 76th 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: 1.8.4

Vendor Advisories (2)

nugetGHSA-7cc5-cqmx-9v7ghigh

ChakraCore RCE Vulnerability

May 13, 2022
microsoft2018-May/CVE-2018-8177Critical

Chakra Scripting Engine Memory Corruption Vulnerability

May 8, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8177
PatchVendor Advisory
securityfocus.com / bid/104090
Third Party AdvisoryVDB Entry