Which products and versions are affected by CVE-2018-8355?

Affected: ChakraCore (Microsoft) versions >= ChakraCore; Edge (Microsoft) versions >= Windows 10 for 32-bit Systems; Internet Explorer (Microsoft) versions 11, among others. The full list is in the CVE brief.

Is CVE-2018-8355 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2018-8355 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2018-8355?

Public exploit code is available.

Is there a fix for CVE-2018-8355?

Fixed versions are available, including Microsoft.ChakraCore 1.10.2.

How urgently should CVE-2018-8355 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2018-8355

HighPublic exploit

ChakraCore RCE Vulnerability

Published May 13, 2022 · Updated Aug 5, 2024 · Also known as GHSA-h8jq-5737-hpcf

Key Facts

Patch immediately

CVE-2018-8355 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting ChakraCore (Microsoft), Edge (Microsoft), Internet Explorer (Microsoft) and 2 more products.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 68% probability of exploitation in the next 30 days.
Fixed versions are available, including Microsoft.ChakraCore 1.10.2.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

7.5

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

68%

Higher than 99.3% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2018-8355 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge. This CVE ID is unique from CVE-2018-8353, CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8373, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.

Affected Products

7 affected entries in total

Product	Affected versions	Fixed in
ChakraCoreMicrosoft	>= ChakraCore	n/a
EdgeMicrosoft	>= Windows 10 for 32-bit Systems	n/a
Internet ExplorerMicrosoft	11	n/a
Microsoft.ChakraCorenuget	See advisory	1.10.2
Internet Explorer 11	>= Windows 10 for 32-bit Systems	n/a

Patched Releases

Microsoft.ChakraCore

1.10.2

Timeline

Publicly disclosed
May 13, 2022
Last updated
Aug 5, 2024

Weakness Type

CWE-787 Out-of-bounds Write

References

advisoryGHSA advisory
advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2018-8355
advisory104978
advisory1041457
exploit45432

7 more references in the full CVE brief

FAQ

Common Questions.

A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge.
Affected: ChakraCore (Microsoft) versions >= ChakraCore; Edge (Microsoft) versions >= Windows 10 for 32-bit Systems; Internet Explorer (Microsoft) versions 11, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Microsoft.ChakraCore 1.10.2.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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