CVE-2018-8291
HighPublic exploitChakraCore RCE Vulnerability
Published May 13, 2022 · Updated Jul 8, 2026 · Also known as GHSA-j67m-wpv6-pv44
Key Facts
Patch immediately- CVE-2018-8291 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 69% probability of exploitation in the next 30 days.
- Fixed versions are available, including ChakraCore 1.10.1, Microsoft.ChakraCore 1.10.1.
- 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)
69%
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-2018-8291 brief as a PDF
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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-2018-8242, CVE-2018-8283, CVE-2018-8287, CVE-2018-8288, CVE-2018-8296, CVE-2018-8298.
Affected Products
7 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ChakraCoreMicrosoft | >= ChakraCore | 1.10.1 |
| EdgeMicrosoft | >= Windows 10 for 32-bit Systems | n/a |
| Internet ExplorerMicrosoft | 11 | n/a |
| Microsoft.ChakraCorenuget | See advisory | 1.10.1 |
| Internet Explorer 11 | >= Windows 10 for 32-bit Systems | n/a |
Patched Releases
ChakraCore
1.10.1
Microsoft.ChakraCore
1.10.1
Timeline
Publicly disclosed
May 13, 2022
Last updated
Jul 8, 2026
Weakness Type
- CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')
References
- advisoryGHSA advisory
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2018-8291
- advisory104637
- advisory1041256
- advisory1041258
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 ChakraCore 1.10.1, Microsoft.ChakraCore 1.10.1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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