{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper neutralization of input during web page generation (\u0027cross-site scripting\u0027) in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network."
    }
  ],
  "id": "CVE-2026-45501",
  "lastModified": "2026-06-09T23:16:54.890",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "secure@microsoft.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-09T17:17:25.880",
  "references": [
    {
      "source": "secure@microsoft.com",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45501"
    }
  ],
  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "secure@microsoft.com",
      "type": "Secondary"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-45501"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-09T17:17:25Z",
    "severity": "MODERATE"
  },
  "details": "Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.",
  "id": "GHSA-rc45-hpv2-j3hh",
  "modified": "2026-06-09T18:30:50Z",
  "published": "2026-06-09T18:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45501"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45501"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "MARIOS GYFTOS"
        ]
      },
      {
        "names": [
          "\u003ca href=\"https://smlijun.github.io/\"\u003eDongJun Kim (smlijun)\u003c/a\u003e with UIUC"
        ]
      },
      {
        "names": [
          "Hwiwon Lee (hwiwonl) with UIUC"
        ]
      },
      {
        "names": [
          "Jongseong Kim (nevul37) with UIUC"
        ]
      },
      {
        "names": [
          "\u003ca href=\"https://www.linkedin.com/in/talha--gunay/\"\u003eTALHA G\u0026#220;NAY\u003c/a\u003e"
        ]
      },
      {
        "names": [
          "Younggi Park (grill66) with UIUC"
        ]
      },
      {
        "names": [
          "\u003ca href=\"https://www.linkedin.com/in/artemy-tsetsersky/\"\u003eArtemy Tsetsersky\u003c/a\u003e with \u003ca href=\"https://www.angarasecurity.ru/\"\u003eAngara Security\u003c/a\u003e"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      },
      {
        "category": "general",
        "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-45501 Microsoft Exchange Server Spoofing Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45501"
      },
      {
        "category": "self",
        "summary": "CVE-2026-45501 Microsoft Exchange Server Spoofing Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-45501.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Microsoft Exchange Server Spoofing Vulnerability",
    "tracking": {
      "current_release_date": "2026-06-09T07:00:00.000Z",
      "generator": {
        "date": "2026-06-09T17:48:04.022Z",
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      "revision_history": [
        {
          "date": "2026-06-09T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
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    }
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            }
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      "notes": [
        {
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          "title": "Assigning CNA"
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          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45501"
        },
        {
          "category": "self",
          "summary": "CVE-2026-45501 Microsoft Exchange Server Spoofing Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-45501.json"
        }
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          "date": "2026-06-09T07:00:00.000Z",
          "details": "15.02.2562.043:Security Update:https://support.microsoft.com/help/5094139",
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          "details": "15.01.2507.069:Security Update:https://support.microsoft.com/help/5094144",
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          ],
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        },
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          "date": "2026-06-09T07:00:00.000Z",
          "details": "15.02.1748.046:Security Update:https://support.microsoft.com/help/5094140",
          "product_ids": [
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          ],
          "url": "https://support.microsoft.com/help/5094140"
        },
        {
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          "date": "2026-06-09T07:00:00.000Z",
          "details": "15.02.1544.041:Security Update:https://support.microsoft.com/help/5094142",
          "product_ids": [
            "3"
          ],
          "url": "https://support.microsoft.com/help/5094142"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 5.7,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Spoofing"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft Exchange Server Spoofing Vulnerability"
    }
  ]
}

{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "Microsoft heeft kwetsbaarheden verholpen in Exchange, zowel on-premise als online.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "Een kwaadwillende kan de kwetsbaarheden misbruiken om zich voor te doen als andere gebruiker en toegang te krijgen tot gevoelige gegevens. Ook kan de kwaadwillende mogelijk willekeurige code uitvoeren.\n\nDe ernstigste kwetsbaarheid bevond zich in Exchange Online en heeft kenmerk CVE-2026-48579 toegewezen gekregen. Deze kwetsbaarheid is reeds centraal verholpen door Microsoft en vereist geen verdere actie. De kwetsbaarheid is ter informatie opgenomen.\n\n```\nMicrosoft Exchange Online: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-48579 | 9.10 | Toegang tot gevoelige gegevens      | \n|----------------|------|-------------------------------------|\n\nMicrosoft Exchange Server: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-45500 | 6.10 | Voordoen als andere gebruiker       | \n| CVE-2026-45501 | 6.50 | Voordoen als andere gebruiker       | \n| CVE-2026-45502 | 5.00 | Toegang tot gevoelige gegevens      | \n| CVE-2026-45503 | 8.10 | Toegang tot gevoelige gegevens      | \n| CVE-2026-45504 | 8.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-45583 | 7.50 | Uitvoeren van willekeurige code     | \n| CVE-2026-47631 | 8.10 | Voordoen als andere gebruiker       | \n|----------------|------|-------------------------------------|\n```",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Microsoft heeft updates beschikbaar gesteld waarmee de beschreven kwetsbaarheden worden verholpen. We raden u aan om deze updates te installeren. Meer informatie over de kwetsbaarheden, de installatie van de updates en eventuele work-arounds vindt u op:\n\nhttps://portal.msrc.microsoft.com/en-us/security-guidance",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
        "title": "CWE-79"
      },
      {
        "category": "general",
        "text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
        "title": "CWE-94"
      },
      {
        "category": "general",
        "text": "Improper Authorization",
        "title": "CWE-285"
      },
      {
        "category": "general",
        "text": "Server-Side Request Forgery (SSRF)",
        "title": "CWE-918"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "title": "Kwetsbaarheden verholpen in Microsoft Exchange",
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        "date": "2025-08-04T16:30:00Z",
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      "revision_history": [
        {
          "date": "2026-06-09T18:35:29.682051Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
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                "category": "product_version_range",
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                "product": {
                  "name": "vers:unknown/*",
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        "name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
          "title": "CWE-79"
        },
        {
          "category": "description",
          "text": "A cross-site scripting vulnerability in Microsoft Exchange Server allows unauthorized attackers to perform network-based spoofing by improperly neutralizing input during web page generation.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
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          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6"
        ]
      },
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          "summary": "CVE-2026-45500 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-45500.json"
        }
      ],
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        {
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
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          },
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            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6"
          ]
        }
      ],
      "title": "CVE-2026-45500"
    },
    {
      "cve": "CVE-2026-45501",
      "cwe": {
        "id": "CWE-918",
        "name": "Server-Side Request Forgery (SSRF)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Server-Side Request Forgery (SSRF)",
          "title": "CWE-918"
        },
        {
          "category": "description",
          "text": "Microsoft Exchange Server contains SSRF and XSS vulnerabilities that allow authorized and unauthorized attackers to perform network spoofing due to improper input neutralization during web page generation.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-45501 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-45501.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6"
          ]
        }
      ],
      "title": "CVE-2026-45501"
    },
    {
      "cve": "CVE-2026-45502",
      "cwe": {
        "id": "CWE-918",
        "name": "Server-Side Request Forgery (SSRF)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Server-Side Request Forgery (SSRF)",
          "title": "CWE-918"
        },
        {
          "category": "description",
          "text": "A server-side request forgery (SSRF) vulnerability in Microsoft Exchange Server allows an authorized attacker to disclose sensitive information over a network.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-45502 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-45502.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.0,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6"
          ]
        }
      ],
      "title": "CVE-2026-45502"
    },
    {
      "cve": "CVE-2026-45503",
      "notes": [
        {
          "category": "description",
          "text": "Multiple vulnerabilities in Microsoft Exchange Server, including improper authorization and server-side request forgery (SSRF), allow authorized attackers to disclose sensitive information over a network.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-45503 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-45503.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6"
          ]
        }
      ],
      "title": "CVE-2026-45503"
    },
    {
      "cve": "CVE-2026-45504",
      "cwe": {
        "id": "CWE-918",
        "name": "Server-Side Request Forgery (SSRF)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Server-Side Request Forgery (SSRF)",
          "title": "CWE-918"
        },
        {
          "category": "description",
          "text": "A server-side request forgery (SSRF) vulnerability in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network, potentially compromising system security.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-45504 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-45504.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6"
          ]
        }
      ],
      "title": "CVE-2026-45504"
    },
    {
      "cve": "CVE-2026-45583",
      "cwe": {
        "id": "CWE-94",
        "name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
          "title": "CWE-94"
        },
        {
          "category": "description",
          "text": "A code injection vulnerability in Microsoft Exchange Server allows unauthorized remote attackers to execute arbitrary code over a network.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-45583 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-45583.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6"
          ]
        }
      ],
      "title": "CVE-2026-45583"
    },
    {
      "cve": "CVE-2026-47631",
      "cwe": {
        "id": "CWE-79",
        "name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
          "title": "CWE-79"
        },
        {
          "category": "description",
          "text": "A cross-site scripting vulnerability in Microsoft Exchange Server allows unauthorized attackers to perform network-based spoofing by improperly neutralizing input during web page generation.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-47631 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-47631.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6"
          ]
        }
      ],
      "title": "CVE-2026-47631"
    },
    {
      "cve": "CVE-2026-48579",
      "notes": [
        {
          "category": "description",
          "text": "An improper authorization vulnerability in Microsoft Exchange Online enables unauthorized attackers to disclose sensitive information over a network.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-48579 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-48579.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6"
          ]
        }
      ],
      "title": "CVE-2026-48579"
    }
  ]
}

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Exchange ist ein Groupware und Nachrichtensystem der Firma Microsoft.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter Angreifer kann mehrere Schwachstellen in Microsoft Exchange ausnutzen, um Administratorrechte zu erlangen, beliebigen Code auszuf\u00fchren, Spoofing-Angriffe durchzuf\u00fchren, vertrauliche Informationen offenzulegen und Daten zu manipulieren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-1846 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1846.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1846 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1846"
      },
      {
        "category": "external",
        "summary": "Microsoft Leitfaden f\u00fcr Sicherheitsupdates",
        "url": "https://msrc.microsoft.com/update-guide/"
      }
    ],
    "source_lang": "en-US",
    "title": "Microsoft Exchange: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-06-09T22:00:00.000+00:00",
      "generator": {
        "date": "2026-06-10T06:25:58.683+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1846",
      "initial_release_date": "2026-06-09T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-06-09T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "Server",
                "product": {
                  "name": "Microsoft Exchange Server",
                  "product_id": "T055131",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:microsoft:exchange:server"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "Server Subscription Edition RTM",
                "product": {
                  "name": "Microsoft Exchange Server Subscription Edition RTM",
                  "product_id": "T055132",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:microsoft:exchange:server_subscription_edition_rtm"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Exchange"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-45500",
      "product_status": {
        "known_affected": [
          "T055132",
          "T055131"
        ]
      },
      "release_date": "2026-06-09T22:00:00.000+00:00",
      "title": "CVE-2026-45500"
    },
    {
      "cve": "CVE-2026-45501",
      "product_status": {
        "known_affected": [
          "T055132",
          "T055131"
        ]
      },
      "release_date": "2026-06-09T22:00:00.000+00:00",
      "title": "CVE-2026-45501"
    },
    {
      "cve": "CVE-2026-45502",
      "product_status": {
        "known_affected": [
          "T055132",
          "T055131"
        ]
      },
      "release_date": "2026-06-09T22:00:00.000+00:00",
      "title": "CVE-2026-45502"
    },
    {
      "cve": "CVE-2026-45503",
      "product_status": {
        "known_affected": [
          "T055132",
          "T055131"
        ]
      },
      "release_date": "2026-06-09T22:00:00.000+00:00",
      "title": "CVE-2026-45503"
    },
    {
      "cve": "CVE-2026-45504",
      "product_status": {
        "known_affected": [
          "T055132",
          "T055131"
        ]
      },
      "release_date": "2026-06-09T22:00:00.000+00:00",
      "title": "CVE-2026-45504"
    },
    {
      "cve": "CVE-2026-45583",
      "product_status": {
        "known_affected": [
          "T055132",
          "T055131"
        ]
      },
      "release_date": "2026-06-09T22:00:00.000+00:00",
      "title": "CVE-2026-45583"
    },
    {
      "cve": "CVE-2026-47631",
      "product_status": {
        "known_affected": [
          "T055132",
          "T055131"
        ]
      },
      "release_date": "2026-06-09T22:00:00.000+00:00",
      "title": "CVE-2026-47631"
    }
  ]
}