What’s Vulnerable › Vulnerabilities

CVE-2019-0771

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 10.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-04-09 · updated 2026-06-17
• Weakness: CWE-787

Description

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2019-0609, CVE-2019-0639, CVE-2019-0680, CVE-2019-0769, CVE-2019-0770, CVE-2019-0773, CVE-2019-0783.

Affected products

• Microsoft ChakraCore: before 1.11.7 — fixed in 1.11.7
• Microsoft Edge: all versions
• Microsoft ChakraCore: all versions
• Microsoft Edge: Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems, Windows Server 2016, Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows 10 Version 1703 for 32-bit Systems (+11)

How to fix

Upgrade to a fixed version: Microsoft ChakraCore 1.11.7. Check the vendor advisory for mitigations.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0771
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0771

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