GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2020-17131 (GCVE-0-2020-17131)

Vulnerability from cvelistv5 – Published: 2020-12-09 23:36 – Updated: 2026-06-09 18:08
VLAI
Title
Chakra Scripting Engine Memory Corruption Vulnerability
Summary
Chakra Scripting Engine Memory Corruption Vulnerability
Severity
4.2 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
CWE
  • Remote Code Execution
Assigner
References
Impacted products
Vendor Product Version CPE status
Microsoft ChakraCore Affected: 0 , < publication (custom)
guessed Create a notification for this product.
Microsoft Microsoft Edge (EdgeHTML-based) Affected: 1.0..0 , < publication (custom)
guessed Create a notification for this product.
Date Public
2020-12-08 08:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T13:53:16.550Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17131"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ChakraCore",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "platforms": [
            "Windows 10 Version 1809 for 32-bit Systems",
            "Windows 10 Version 1809 for ARM64-based Systems",
            "Windows 10 Version 1809 for x64-based Systems",
            "Windows 10 Version 1903 for 32-bit Systems",
            "Windows 10 Version 1903 for ARM64-based Systems",
            "Windows 10 Version 1903 for x64-based Systems",
            "Windows 10 Version 1909 for 32-bit Systems",
            "Windows 10 Version 1909 for ARM64-based Systems",
            "Windows 10 Version 1909 for x64-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 Version 20H2 for 32-bit Systems",
            "Windows 10 Version 20H2 for ARM64-based Systems",
            "Windows Server 2019"
          ],
          "product": "Microsoft Edge (EdgeHTML-based)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "status": "affected",
              "version": "1.0..0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "publication",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:microsoft:edge:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "publication",
                  "versionStartIncluding": "1.0..0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "datePublic": "2020-12-08T08:00:00.000Z",
      "descriptions": [
        {
          "lang": "en-US",
          "value": "Chakra Scripting Engine Memory Corruption Vulnerability"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 4.2,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Remote Code Execution",
              "lang": "en-US",
              "type": "Impact"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-09T18:08:13.871Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
      "references": [
        {
          "name": "Chakra Scripting Engine Memory Corruption Vulnerability",
          "tags": [
            "vendor-advisory",
            "patch"
          ],
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-17131"
        }
      ],
      "title": "Chakra Scripting Engine Memory Corruption Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2020-17131",
    "datePublished": "2020-12-09T23:36:50.000Z",
    "dateReserved": "2020-08-04T00:00:00.000Z",
    "dateUpdated": "2026-06-09T18:08:13.871Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-17131",
      "date": "2026-09-18",
      "epss": "0.01893",
      "percentile": "0.78658"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*",
                  "matchCriteriaId": "77D197D7-57FB-4898-8C70-B19D5F0D5BE0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            },
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:arm64:*",
                  "matchCriteriaId": "610B33F9-0309-4CF7-B7E4-5152D9B2FFE4",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x64:*",
                  "matchCriteriaId": "21074553-EDF2-468D-8E79-C39851B5BC79",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:*",
                  "matchCriteriaId": "4E62F9CB-D1B6-4B4D-BCCD-7F4D36A73B4D",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:arm64:*",
                  "matchCriteriaId": "925B8C67-C96F-4A4D-9BE7-CCCD78EF3C31",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:*",
                  "matchCriteriaId": "6CF580BA-6938-40F6-9D86-F43044A6BACA",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:*",
                  "matchCriteriaId": "C5E038AA-514F-48AC-B45E-859EE32525B4",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:arm64:*",
                  "matchCriteriaId": "16F864AE-C519-4D23-9D24-B65E53C5CD28",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:x64:*",
                  "matchCriteriaId": "2487AF09-F003-482A-BD42-31F6AEAA033F",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:x86:*",
                  "matchCriteriaId": "A07F4D5D-EA91-4B77-9B74-D4741FFA8D85",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:arm64:*",
                  "matchCriteriaId": "31622391-A67E-4E2A-A855-1316B6E38630",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x64:*",
                  "matchCriteriaId": "61F0792D-7587-4297-8EE7-D4DC3A30EE84",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x86:*",
                  "matchCriteriaId": "7649042B-4430-4BD9-B82F-984A2831A651",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:arm64:*",
                  "matchCriteriaId": "E6132F03-DA28-4830-A69F-C2154C7FD96C",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x64:*",
                  "matchCriteriaId": "09D9A720-8D3C-4699-AC57-CB4531E5BFEB",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x86:*",
                  "matchCriteriaId": "BF67A7F7-466F-467D-8D2B-3273714D43C3",
                  "vulnerable": false
                },
                {
                  "criteria": "cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*",
                  "matchCriteriaId": "DB79EE26-FC32-417D-A49C-A1A63165A968",
                  "vulnerable": false
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "AND"
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "64DEDED5-4854-45A0-88AD-351ECED54778",
                  "versionEndExcluding": "1.11.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Chakra Scripting Engine Memory Corruption Vulnerability"
        },
        {
          "lang": "es",
          "value": "Vulnerabilidad de corrupci\u00f3n de memoria en el motor de scripting de Chakra"
        }
      ],
      "id": "CVE-2020-17131",
      "lastModified": "2024-11-21T05:07:52.720",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "MEDIUM",
            "cvssData": {
              "accessComplexity": "HIGH",
              "accessVector": "NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "PARTIAL",
              "baseScore": 5.1,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "PARTIAL",
              "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P",
              "version": "2.0"
            },
            "exploitabilityScore": 4.9,
            "impactScore": 6.4,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": true
          }
        ],
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 4.2,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N",
              "version": "3.1"
            },
            "exploitabilityScore": 1.6,
            "impactScore": 2.5,
            "source": "secure@microsoft.com",
            "type": "Secondary"
          },
          {
            "cvssData": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 1.6,
            "impactScore": 5.9,
            "source": "nvd@nist.gov",
            "type": "Secondary"
          }
        ]
      },
      "published": "2020-12-10T00:15:15.323",
      "references": [
        {
          "source": "secure@microsoft.com",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17131"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17131"
        }
      ],
      "sourceIdentifier": "secure@microsoft.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-787"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "77D197D7-57FB-4898-8C70-B19D5F0D5BE0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:arm64:*",
                    "matchCriteriaId": "610B33F9-0309-4CF7-B7E4-5152D9B2FFE4",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x64:*",
                    "matchCriteriaId": "21074553-EDF2-468D-8E79-C39851B5BC79",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:*",
                    "matchCriteriaId": "4E62F9CB-D1B6-4B4D-BCCD-7F4D36A73B4D",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:arm64:*",
                    "matchCriteriaId": "925B8C67-C96F-4A4D-9BE7-CCCD78EF3C31",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:*",
                    "matchCriteriaId": "6CF580BA-6938-40F6-9D86-F43044A6BACA",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:*",
                    "matchCriteriaId": "C5E038AA-514F-48AC-B45E-859EE32525B4",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:arm64:*",
                    "matchCriteriaId": "16F864AE-C519-4D23-9D24-B65E53C5CD28",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:x64:*",
                    "matchCriteriaId": "2487AF09-F003-482A-BD42-31F6AEAA033F",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:x86:*",
                    "matchCriteriaId": "A07F4D5D-EA91-4B77-9B74-D4741FFA8D85",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:arm64:*",
                    "matchCriteriaId": "31622391-A67E-4E2A-A855-1316B6E38630",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x64:*",
                    "matchCriteriaId": "61F0792D-7587-4297-8EE7-D4DC3A30EE84",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x86:*",
                    "matchCriteriaId": "7649042B-4430-4BD9-B82F-984A2831A651",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:arm64:*",
                    "matchCriteriaId": "E6132F03-DA28-4830-A69F-C2154C7FD96C",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x64:*",
                    "matchCriteriaId": "09D9A720-8D3C-4699-AC57-CB4531E5BFEB",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x86:*",
                    "matchCriteriaId": "BF67A7F7-466F-467D-8D2B-3273714D43C3",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DB79EE26-FC32-417D-A49C-A1A63165A968",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "64DEDED5-4854-45A0-88AD-351ECED54778",
                    "versionEndExcluding": "1.11.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Chakra Scripting Engine Memory Corruption Vulnerability"
          },
          {
            "lang": "es",
            "value": "Vulnerabilidad de corrupci\u00f3n de memoria en el motor de scripting de Chakra"
          }
        ],
        "id": "CVE-2020-17131",
        "lastModified": "2025-08-28T23:15:40.013",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "HIGH",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 5.1,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 4.9,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.2,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.6,
              "impactScore": 2.5,
              "source": "secure@microsoft.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.6,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Secondary"
            }
          ]
        },
        "published": "2020-12-10T00:15:15.323",
        "references": [
          {
            "source": "secure@microsoft.com",
            "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-17131"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17131"
          }
        ],
        "sourceIdentifier": "secure@microsoft.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.