CVE-2020-1073
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'.
- Record
CVE-2020-1073- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'.
- Record
CVE-2020-1073- Updated
- 2026-11-02
EUVDEUVD-2022-3875 No score
A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'.
- Record
EUVD-2022-3875- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g3m9-qrfj-xw4g
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'.
- Record
GHSA-g3m9-qrfj-xw4g- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-119, CWE-787
- Updated
- 2026-11-02
OSV
A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'.
- Record
CVE-2020-1073- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-g3m9-qrfj-xw4g
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'.
- Record
GHSA-g3m9-qrfj-xw4g- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-119, CWE-787
- Updated
- 2026-11-02
Affected products
- microsoft chakracore
- microsoft edge
- microsoft edge (edgehtml-based) on windows 10 for 32-bit systems
- microsoft edge (edgehtml-based) on windows 10 for x64-based systems
- microsoft edge (edgehtml-based) on windows 10 version 1607 for 32-bit systems
- microsoft edge (edgehtml-based) on windows 10 version 1607 for x64-based systems
- microsoft edge (edgehtml-based) on windows 10 version 1709 for 32-bit systems
- microsoft edge (edgehtml-based) on windows 10 version 1709 for arm64-based systems
- microsoft edge (edgehtml-based) on windows 10 version 1709 for x64-based systems
- microsoft edge (edgehtml-based) on windows 10 version 1803 for 32-bit systems
- microsoft edge (edgehtml-based) on windows 10 version 1803 for arm64-based systems
- microsoft edge (edgehtml-based) on windows 10 version 1803 for x64-based systems
Show 11 moreShow less
- microsoft edge (edgehtml-based) on windows 10 version 1809 for 32-bit systems
- microsoft edge (edgehtml-based) on windows 10 version 1809 for arm64-based systems
- microsoft edge (edgehtml-based) on windows 10 version 1809 for x64-based systems
- microsoft edge (edgehtml-based) on windows 10 version 1903 for 32-bit systems
- microsoft edge (edgehtml-based) on windows 10 version 1903 for arm64-based systems
- microsoft edge (edgehtml-based) on windows 10 version 1903 for x64-based systems
- microsoft edge (edgehtml-based) on windows 10 version 1909 for 32-bit systems
- microsoft edge (edgehtml-based) on windows 10 version 1909 for arm64-based systems
- microsoft edge (edgehtml-based) on windows 10 version 1909 for x64-based systems
- microsoft edge (edgehtml-based) on windows server 2016
- microsoft edge (edgehtml-based) on windows server 2019
Affected packages
| Package | Affected | Fixed |
|---|---|---|
Microsoft.ChakraCoreNuGet |
before 1.11.20 | 1.11.20 |
Microsoft.ChakraCoreNuGet |
before 1.11.20, plus listed versions 1.10.01.10.11.10.21.11.01.11.1 Show 45 moreShow less1.11.101.11.111.11.121.11.131.11.141.11.151.11.161.11.171.11.181.11.191.11.21.11.31.11.41.11.51.11.61.11.71.11.81.11.91.2.01.2.11.2.21.2.31.2.6.62716-preview1.3.01.3.11.3.21.4.01.4.11.4.21.4.31.4.41.4.51.5.01.5.11.5.21.5.31.6.01.6.21.7.01.7.11.7.21.7.31.7.41.7.51.7.6 |
1.11.20 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-1073 is a high vulnerability (CVSS 8.1) in Microsoft Chakracore, published June 9, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 8.85%, the 95th percentile. Fixed in Microsoft.ChakraCore 1.11.20.
References
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1073
nvd.nist.gov/vuln/detail/CVE-2020-1073
github.com/chakra-core/ChakraCore/pull/6464
Left out here: 6 versions. The JSON record has them.