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CVE-2026-50678

🗓️ 14 Jul 2026 17:05:08Reported by microsoftType 
cve
 cve
🔗 web.nvd.nist.gov👁 6 Views

CVE-2026-50678: A heap-based buffer overflow in Microsoft Excel (Office) allows local information disclosure. CVSS v3.1 base score 6.6 (Medium): AV:L, AC:L, PR:N, UI:R, S:U, C:L, I:L, A:H. No exploit details are provided in the accompanying docume...

Related
Detection
Affected
Refs
Vulners
CNA
Node
microsoftmicrosoft_365_appsMatch16.0.1enterprisex32
OR
microsoftmicrosoft_365_appsMatch16.0.1enterprisex64
Node
microsoftexcel_2016Range16.0.0.016.0.5561.1001x32
OR
microsoftexcel_2016Range16.0.0.016.0.5561.1001x64
Node
microsoftoffice_365_proplusRange1.0.016.111.26071215macos
Node
Node
Node
microsoftoffice_2021Range16.0.116.111.26071215ltscmacos
Node
microsoftoffice_2024Range16.0.016.111.26071215ltscmacos
Node
microsoftoffice_online_serverRange16.0.0.016.0.10417.20175
[
  {
    "vendor": "Microsoft",
    "product": "Microsoft 365 Apps for Enterprise",
    "platforms": [
      "32-bit Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "16.0.1",
        "lessThan": "https://aka.ms/OfficeSecurityReleases",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Excel 2016",
    "platforms": [
      "32-bit Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "16.0.0.0",
        "lessThan": "16.0.5561.1001",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Office 2019",
    "platforms": [
      "32-bit Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "19.0.0",
        "lessThan": "https://aka.ms/OfficeSecurityReleases",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Office 365 for Mac",
    "versions": [
      {
        "version": "1.0.0",
        "lessThan": "16.111.26071215",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Office LTSC 2021",
    "platforms": [
      "32-bit Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "16.0.1",
        "lessThan": "https://aka.ms/OfficeSecurityReleases",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Office LTSC 2024",
    "platforms": [
      "32-bit Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "16.0.0",
        "lessThan": "https://aka.ms/OfficeSecurityReleases",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Office LTSC for Mac 2021",
    "versions": [
      {
        "version": "16.0.1",
        "lessThan": "16.111.26071215",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Office LTSC for Mac 2024",
    "versions": [
      {
        "version": "16.0.0",
        "lessThan": "16.111.26071215",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Office Online Server",
    "versions": [
      {
        "version": "16.0.0.0",
        "lessThan": "16.0.10417.20175",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  }
]

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14 Jul 2026 20:34Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.16.6
SSVC
6