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

CVE-2021-41355 (GCVE-0-2021-41355)

Vulnerability from cvelistv5 – Published: 2021-10-13 00:28 – Updated: 2024-08-04 03:08
VLAI
Title
.NET Core and Visual Studio Information Disclosure Vulnerability
Summary
.NET Core and Visual Studio Information Disclosure Vulnerability
CWE
  • Information Disclosure
Impacted products
Vendor Product Version CPE status
Microsoft PowerShell 7.1 Affected: 7.1.0 , < 7.1.5 (custom)
    cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*
Create a notification for this product.
Microsoft Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) Affected: 15.0.0 , < 16.9.12 (custom)
    cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*
Create a notification for this product.
Microsoft Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10) Affected: 16.11.0 , < 16.11.5 (custom)
    cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
Create a notification for this product.
Microsoft .NET 5.0 Affected: 5.0.0 , < 5.0.11 (custom)
    cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2021-10-12 07:00
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:08:32.217Z",
          "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-2021-41355"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "PowerShell 7.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "7.1.5",
              "status": "affected",
              "version": "7.1.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "16.9.12",
              "status": "affected",
              "version": "15.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "16.11.5",
              "status": "affected",
              "version": "16.11.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": ".NET 5.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "5.0.11",
              "status": "affected",
              "version": "5.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-10-12T07:00:00.000Z",
      "descriptions": [
        {
          "lang": "en-US",
          "value": ".NET Core and Visual Studio Information Disclosure Vulnerability"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 5.7,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Information Disclosure",
              "lang": "en-US",
              "type": "Impact"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-29T14:52:18.055Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41355"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        }
      ],
      "title": ".NET Core and Visual Studio Information Disclosure Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2021-41355",
    "datePublished": "2021-10-13T00:28:19.000Z",
    "dateReserved": "2021-09-17T00:00:00.000Z",
    "dateUpdated": "2024-08-04T03:08:32.217Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-41355",
      "date": "2026-09-19",
      "epss": "0.20342",
      "percentile": "0.97363"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:microsoft:.net:5.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "C8F02D5C-61F1-4381-8D64-8BEB5CED0DC6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "B041049C-2717-41B9-A56F-F080967E5FB9",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "C9984FFB-8AFA-438F-B762-B98649B64B23",
                  "versionEndIncluding": "16.11",
                  "versionStartIncluding": "16.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": ".NET Core and Visual Studio Information Disclosure Vulnerability"
        },
        {
          "lang": "es",
          "value": "Una vulnerabilidad de Divulgaci\u00f3n de Informaci\u00f3n en .NET Core y Visual Studio"
        }
      ],
      "id": "CVE-2021-41355",
      "lastModified": "2024-11-21T06:26:07.627",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "LOW",
            "cvssData": {
              "accessComplexity": "MEDIUM",
              "accessVector": "ADJACENT_NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "NONE",
              "baseScore": 2.9,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "NONE",
              "vectorString": "AV:A/AC:M/Au:N/C:P/I:N/A:N",
              "version": "2.0"
            },
            "exploitabilityScore": 5.5,
            "impactScore": 2.9,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": true
          }
        ],
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "ADJACENT_NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.7,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
              "version": "3.1"
            },
            "exploitabilityScore": 2.1,
            "impactScore": 3.6,
            "source": "secure@microsoft.com",
            "type": "Secondary"
          },
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "ADJACENT_NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.7,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
              "version": "3.1"
            },
            "exploitabilityScore": 2.1,
            "impactScore": 3.6,
            "source": "nvd@nist.gov",
            "type": "Secondary"
          }
        ]
      },
      "published": "2021-10-13T01:15:13.907",
      "references": [
        {
          "source": "secure@microsoft.com",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41355"
        },
        {
          "source": "secure@microsoft.com",
          "tags": [
            "Not Applicable",
            "Third Party Advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41355"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Not Applicable",
            "Third Party Advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        }
      ],
      "sourceIdentifier": "secure@microsoft.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "NVD-CWE-noinfo"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "cpes": [
                  "cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*"
                ],
                "platforms": [
                  "Unknown"
                ],
                "product": "PowerShell 7.1",
                "vendor": "Microsoft",
                "versions": [
                  {
                    "lessThan": "7.1.5",
                    "status": "affected",
                    "version": "7.1.0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*"
                ],
                "platforms": [
                  "Unknown"
                ],
                "product": "Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)",
                "vendor": "Microsoft",
                "versions": [
                  {
                    "lessThan": "16.9.12",
                    "status": "affected",
                    "version": "15.0.0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
                ],
                "platforms": [
                  "Unknown"
                ],
                "product": "Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)",
                "vendor": "Microsoft",
                "versions": [
                  {
                    "lessThan": "16.11.5",
                    "status": "affected",
                    "version": "16.11.0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*"
                ],
                "platforms": [
                  "Unknown"
                ],
                "product": ".NET 5.0",
                "vendor": "Microsoft",
                "versions": [
                  {
                    "lessThan": "5.0.11",
                    "status": "affected",
                    "version": "5.0.0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "secure@microsoft.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:microsoft:.net:5.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C8F02D5C-61F1-4381-8D64-8BEB5CED0DC6",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B041049C-2717-41B9-A56F-F080967E5FB9",
                    "versionEndExcluding": "7.1.5",
                    "versionStartIncluding": "7.1",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C9984FFB-8AFA-438F-B762-B98649B64B23",
                    "versionEndIncluding": "16.11",
                    "versionStartIncluding": "16.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": ".NET Core and Visual Studio Information Disclosure Vulnerability"
          },
          {
            "lang": "es",
            "value": "Una vulnerabilidad de Divulgaci\u00f3n de Informaci\u00f3n en .NET Core y Visual Studio"
          }
        ],
        "id": "CVE-2021-41355",
        "lastModified": "2026-06-17T04:08:24.287",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "LOW",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "ADJACENT_NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 2.9,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "NONE",
                "vectorString": "AV:A/AC:M/Au:N/C:P/I:N/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 5.5,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "ADJACENT_NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.7,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.1,
              "impactScore": 3.6,
              "source": "secure@microsoft.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "ADJACENT_NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.7,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.1,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Secondary"
            }
          ]
        },
        "published": "2021-10-13T01:15:13.907",
        "references": [
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41355"
          },
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Not Applicable",
              "Third Party Advisory"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41355"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Not Applicable",
              "Third Party Advisory"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
          }
        ],
        "sourceIdentifier": "secure@microsoft.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T16:11:30+00:00",
      "cve": "CVE-2021-41355",
      "id": "CVE-2021-41355",
      "initial_release_date": "2021-10-12T17:22:00+00:00",
      "product_status:fixed": "61",
      "product_status:known_not_affected": "27",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "dotnet: System.DirectoryServices.Protocols.LdapConnection sends credentials in plaintext if TLS handshake fails",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-41355.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-07-08T00:14:41Z",
      "cve": "CVE-2021-41355",
      "id": "CVE-2021-41355",
      "initial_release_date": "2023-10-31T02:24:56Z",
      "product_status:recommended": "11",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-41355",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-41355.json",
      "version": "7"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

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.


Loading…