Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.

cve CVE-2026-24301 1 source, 1 claim · Watch

NVD writes:
Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network. the claim

What it is to other things

affects	microsoft/copilot NVD
made_by	microsoft NVD

In words only, so not counted until a person confirms one:

affects

microsoft/copilot_web

NVD says “Microsoft · Copilot Web”

What each source says

Property Source Said Means here

Cvss

cvss

NVD

8.8

receipt

Source: NVD
Its words: 8.8
Read by: field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since: 2026-09-29 09:45 UTC
Last answered: 2026-10-04 18:16 UTC
Original: open at the source

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "Copilot Web",
            "vendor": "Microsoft",
            "versions": [
              {
                "status": "affected",
                "version": "-"
              }
            ]
          }
        ],
        "source": "secure@microsoft.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:microsoft:copilot:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "4460C154-CAA1-49B9-8016-EFE5602C6E1C",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [
      {
        "sourceIdentifier": "secure@microsoft.com",
        "tags": [
          "exclusively-hosted-service"
        ]
      }
    ],
    "descriptions": [
      {
        "lang": "en",
        "value": "Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network."
      }
    ],
    "id": "CVE-2026-24301",
    "lastModified": "2026-09-10T18:26:54.557",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9,
          "source": "secure@microsoft.com",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-24301",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-08-18T14:46:29.495886Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-08-18T14:17:01.897",
    "references": [
      {
        "source": "secure@microsoft.com",
        "tags": [
          "Vendor Advisory"
        ],
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24301"
      }
    ],
    "sourceIdentifier": "secure@microsoft.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-77"
          }
        ],
        "source": "secure@microsoft.com",
        "type": "Secondary"
      }
    ]
  }
}

—

Product

product

NVD

Copilot Web

receipt

Source: NVD
Its words: Copilot Web
Read by: field:cve.affected[].affectedData[].product
Said since: 2026-09-29 17:49 UTC
Last answered: 2026-10-04 18:16 UTC
Original: open at the source

2026-09-29 17:49 UTC	Copilot Web
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "Copilot Web",
            "vendor": "Microsoft",
            "versions": [
              {
                "status": "affected",
                "version": "-"
              }
            ]
          }
        ],
        "source": "secure@microsoft.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:microsoft:copilot:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "4460C154-CAA1-49B9-8016-EFE5602C6E1C",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [
      {
        "sourceIdentifier": "secure@microsoft.com",
        "tags": [
          "exclusively-hosted-service"
        ]
      }
    ],
    "descriptions": [
      {
        "lang": "en",
        "value": "Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network."
      }
    ],
    "id": "CVE-2026-24301",
    "lastModified": "2026-09-10T18:26:54.557",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9,
          "source": "secure@microsoft.com",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-24301",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-08-18T14:46:29.495886Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-08-18T14:17:01.897",
    "references": [
      {
        "source": "secure@microsoft.com",
        "tags": [
          "Vendor Advisory"
        ],
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24301"
      }
    ],
    "sourceIdentifier": "secure@microsoft.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-77"
          }
        ],
        "source": "secure@microsoft.com",
        "type": "Secondary"
      }
    ]
  }
}

—

Status

status

NVD

Analyzed

receipt

Source: NVD
Its words: Analyzed
Read by: field:cve.vulnStatus
Said since: 2026-09-29 09:45 UTC
Last answered: 2026-10-04 18:16 UTC
Original: open at the source

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "Copilot Web",
            "vendor": "Microsoft",
            "versions": [
              {
                "status": "affected",
                "version": "-"
              }
            ]
          }
        ],
        "source": "secure@microsoft.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:microsoft:copilot:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "4460C154-CAA1-49B9-8016-EFE5602C6E1C",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [
      {
        "sourceIdentifier": "secure@microsoft.com",
        "tags": [
          "exclusively-hosted-service"
        ]
      }
    ],
    "descriptions": [
      {
        "lang": "en",
        "value": "Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network."
      }
    ],
    "id": "CVE-2026-24301",
    "lastModified": "2026-09-10T18:26:54.557",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9,
          "source": "secure@microsoft.com",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-24301",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-08-18T14:46:29.495886Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-08-18T14:17:01.897",
    "references": [
      {
        "source": "secure@microsoft.com",
        "tags": [
          "Vendor Advisory"
        ],
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24301"
      }
    ],
    "sourceIdentifier": "secure@microsoft.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-77"
          }
        ],
        "source": "secure@microsoft.com",
        "type": "Secondary"
      }
    ]
  }
}

—

Vendor

vendor

NVD

Microsoft

receipt

Source: NVD
Its words: Microsoft
Read by: field:cve.affected[].affectedData[].vendor
Said since: 2026-09-29 17:49 UTC
Last answered: 2026-10-04 18:16 UTC
Original: open at the source

2026-09-29 17:49 UTC	Microsoft
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "Copilot Web",
            "vendor": "Microsoft",
            "versions": [
              {
                "status": "affected",
                "version": "-"
              }
            ]
          }
        ],
        "source": "secure@microsoft.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:microsoft:copilot:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "4460C154-CAA1-49B9-8016-EFE5602C6E1C",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [
      {
        "sourceIdentifier": "secure@microsoft.com",
        "tags": [
          "exclusively-hosted-service"
        ]
      }
    ],
    "descriptions": [
      {
        "lang": "en",
        "value": "Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network."
      }
    ],
    "id": "CVE-2026-24301",
    "lastModified": "2026-09-10T18:26:54.557",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9,
          "source": "secure@microsoft.com",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-24301",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-08-18T14:46:29.495886Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-08-18T14:17:01.897",
    "references": [
      {
        "source": "secure@microsoft.com",
        "tags": [
          "Vendor Advisory"
        ],
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24301"
      }
    ],
    "sourceIdentifier": "secure@microsoft.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-77"
          }
        ],
        "source": "secure@microsoft.com",
        "type": "Secondary"
      }
    ]
  }
}

—

vulnerability

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.

zetlyn/cve-nvd · 2026-08-18

cvss 8.8 product Copilot Web status Analyzed vendor Microsoft

source