{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "<a href=\"https://www.linkedin.com/in/navaponpremkasem/\">71C4</a>"
        ]
      }
    ],
    "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-2026-62915 Microsoft Exchange Server Security Feature Bypass Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62915"
      },
      {
        "category": "self",
        "summary": "CVE-2026-62915 Microsoft Exchange Server Security Feature Bypass Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-62915.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 Security Feature Bypass Vulnerability",
    "tracking": {
      "current_release_date": "2026-08-11T07:00:00.000Z",
      "generator": {
        "date": "2026-08-27T14:16:32.458Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-62915",
      "initial_release_date": "2026-08-11T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-08-11T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<15.01.2507.072",
                "product": {
                  "name": "Microsoft Exchange Server 2016 Cumulative Update 23 <15.01.2507.072",
                  "product_id": "4"
                }
              },
              {
                "category": "product_version",
                "name": "15.01.2507.072",
                "product": {
                  "name": "Microsoft Exchange Server 2016 Cumulative Update 23 15.01.2507.072",
                  "product_id": "12039"
                }
              }
            ],
            "category": "product_name",
            "name": "Microsoft Exchange Server 2016 Cumulative Update 23"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<15.02.2562.046",
                "product": {
                  "name": "Microsoft Exchange Server Subscription Edition RTM <15.02.2562.046",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "15.02.2562.046",
                "product": {
                  "name": "Microsoft Exchange Server Subscription Edition RTM 15.02.2562.046",
                  "product_id": "16792"
                }
              }
            ],
            "category": "product_name",
            "name": "Microsoft Exchange Server Subscription Edition RTM"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<15.02.1748.049",
                "product": {
                  "name": "Microsoft Exchange Server 2019 Cumulative Update 15 <15.02.1748.049",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "15.02.1748.049",
                "product": {
                  "name": "Microsoft Exchange Server 2019 Cumulative Update 15 15.02.1748.049",
                  "product_id": "12502"
                }
              }
            ],
            "category": "product_name",
            "name": "Microsoft Exchange Server 2019 Cumulative Update 15"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<15.02.1544.044",
                "product": {
                  "name": "Microsoft Exchange Server 2019 Cumulative Update 14 <15.02.1544.044",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version",
                "name": "15.02.1544.044",
                "product": {
                  "name": "Microsoft Exchange Server 2019 Cumulative Update 14 15.02.1544.044",
                  "product_id": "12293"
                }
              }
            ],
            "category": "product_name",
            "name": "Microsoft Exchange Server 2019 Cumulative Update 14"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-62915",
      "cwe": {
        "id": "CWE-862",
        "name": "Missing Authorization"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "An authenticated attacker who successfully exploited this vulnerability could bypass a role-based restriction that is intended to control which users are allowed to install mail add-ins. By bypassing this control, a user could install an add-in that requests elevated mailbox permissions that an administrator's policy was meant to prevent.",
          "title": "What kind of security feature could be bypassed by successfully exploiting this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "12039",
          "12293",
          "12502",
          "16792"
        ],
        "known_affected": [
          "1",
          "2",
          "3",
          "4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-62915 Microsoft Exchange Server Security Feature Bypass Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62915"
        },
        {
          "category": "self",
          "summary": "CVE-2026-62915 Microsoft Exchange Server Security Feature Bypass Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-62915.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-11T07:00:00.000Z",
          "details": "15.01.2507.072:Security Update:https://support.microsoft.com/help/5121576",
          "product_ids": [
            "4"
          ],
          "url": "https://support.microsoft.com/help/5121576"
        },
        {
          "category": "vendor_fix",
          "date": "2026-08-11T07:00:00.000Z",
          "details": "15.02.2562.046:Security Update:https://support.microsoft.com/help/5121573",
          "product_ids": [
            "1"
          ],
          "url": "https://support.microsoft.com/help/5121573"
        },
        {
          "category": "vendor_fix",
          "date": "2026-08-11T07:00:00.000Z",
          "details": "15.02.1748.049:Security Update:https://support.microsoft.com/help/5121574",
          "product_ids": [
            "2"
          ],
          "url": "https://support.microsoft.com/help/5121574"
        },
        {
          "category": "vendor_fix",
          "date": "2026-08-11T07:00:00.000Z",
          "details": "15.02.1544.044:Security Update:https://support.microsoft.com/help/5121575",
          "product_ids": [
            "3"
          ],
          "url": "https://support.microsoft.com/help/5121575"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "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:N/I:H/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Security Feature Bypass"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft Exchange Server Security Feature Bypass Vulnerability"
    }
  ]
}