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CVE-2026-55122

🗓️ 14 Jul 2026 17:08:56Reported by microsoftType 
cve
 cve
🔗 web.nvd.nist.gov👁 5 Views

CVE-2026-55122 is a Microsoft Excel information disclosure vulnerability.

Related
Detection
Affected
Refs
NVD
Vulners
CNA
Node
OR
microsoft365_appsMatch-enterprisex64
microsoft365_appsMatch-enterprisex86
microsoftexcelMatch2016x64
microsoftexcelMatch2016x86
microsoftoffice_2021Match-ltsc-x64
microsoftoffice_2021Match-ltsc-x86
microsoftoffice_2021Match-ltscmacos-
microsoftoffice_2024Match-ltsc-x64
microsoftoffice_2024Match-ltsc-x86
microsoftoffice_2024Match-ltscmacos-
microsoftoffice_online_serverRange<16.0.10417.20175
[
  {
    "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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15 Jul 2026 22:26Current
6Medium risk
Vulners AI Score6
CVSS 3.17.1
EPSS0.00342
SSVC
5