Scripting Engine Memory Corruption Vulnerability
Description
A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by modifying how the ChakraCore scripting engine handles objects in memory.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
ChakraCore scripting engine remote code execution vulnerability due to improper memory handling; allows arbitrary code execution in user context.
Vulnerability
Overview
CVE-2020-1057 is a remote code execution vulnerability in the ChakraCore scripting engine, which is used by Microsoft Edge and other applications. The root cause is an improper handling of objects in memory, leading to memory corruption that an attacker can leverage to execute arbitrary code [2].
Exploitation
An attacker can exploit this vulnerability by hosting a specially crafted website or injecting malicious content into a site that processes ChakraCore scripts. The victim must visit the malicious page, typically through a browser or any application that uses ChakraCore. No authentication is required, and the attack can be performed remotely over the network [2].
Impact
Successful exploitation grants the attacker the same user rights as the current user. If the user has administrative privileges, the attacker can gain full control of the system, install programs, view/change/delete data, or create new accounts with full rights [2].
Mitigation
Microsoft addressed this vulnerability in a security update released in September 2020. The fix is implemented in ChakraCore via pull request #6500, which modifies how the engine handles objects in memory to prevent the corruption [1]. Users should apply the latest updates to affected products.
AI Insight generated on May 21, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Microsoft.ChakraCoreNuGet | < 1.11.22 | 1.11.22 |
Affected products
2Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- github.com/advisories/GHSA-9f8c-f7h4-xghfghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2020-1057ghsaADVISORY
- github.com/chakra-core/ChakraCore/pull/6500ghsaWEB
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1057ghsax_refsource_MISCWEB
News mentions
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