What’s Vulnerable › Vulnerabilities

CVE-2020-17131: Chakra Scripting Engine Memory Corruption Vulnerability

• Severity: medium (CVSS 5.1 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-09 · updated 2026-06-17
• Weakness: CWE-787

Description

Chakra Scripting Engine Memory Corruption Vulnerability

Affected products

• Microsoft ChakraCore: before 1.11.0 — fixed in 1.11.0
• Microsoft Edge: all versions
• Microsoft ChakraCore: before publication — fixed in publication
• Microsoft Edge: from 1.0..0 before publication — fixed in publication

How to fix

Upgrade to a fixed version: Microsoft ChakraCore 1.11.0; Microsoft ChakraCore publication; Microsoft Edge publication. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-17131
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17131

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