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01 Record

CVE-2020-17054

Chakra Scripting Engine Memory Corruption Vulnerability

MediumPUBLISHEDCNA: microsoft
CNA base score4.2 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C

02 Description

Chakra Scripting Engine Memory Corruption Vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
2.06% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 81.2% of scored records. A rank, not a probability.
NVD base score
4.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-11-11 06:48Z5 YR AGO
Last updated
2024-10-01 15:56Z2 YR AGO
Reserved
2020-08-04
Assigning CNA
microsoft
Record state
PUBLISHED
Severity
Medium (CVSS 4.2)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C
Weaknesses
Data version
5.1
Document digest
2fb1acd36bc62f210648c7b8f4c5e24361b8e473c9a20949499442c3745ffbab

05 Affected products

VendorProductVersionsPlatforms
MicrosoftChakraCore0 to < publicationUnknown
MicrosoftMicrosoft Edge (EdgeHTML-based)1.0..0 to < publicationWindows 10 Version 1803 for 32-bit Systems, Windows 10 Version 1803 for x64-based Systems, Windows 10 Version 1803 for ARM64-based Systems, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows 10 Version 1809 for ARM64-based Systems, Windows Server 2019, Windows 10 Version 1909 for 32-bit Systems, Windows 10 Version 1909 for x64-based Systems, Windows 10 Version 1909 for ARM64-based Systems, Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows 10 Version 2004 for 32-bit Systems, Windows 10 Version 2004 for ARM64-based Systems, Windows 10 Version 2004 for x64-based Systems, Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems, Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016, Windows 10 Version 20H2 for 32-bit Systems, Windows 10 Version 20H2 for ARM64-based Systems

06 References