FKIE_CVE-2026-63523

Vulnerability from fkie_nvd - Published: 2026-09-08 19:18 - Updated: 2026-09-16 19:21
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
Improper neutralization of input during web page generation ('cross-site scripting') in Skype for Business allows an unauthorized attacker to perform spoofing over a network.
References
secure@microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63523Patch, Vendor Advisory
Impacted products
Vendor Product Version
microsoft skype_for_business_server 2015
microsoft skype_for_business_server 2015
microsoft skype_for_business_server 2019
microsoft skype_for_business_server 2019
microsoft skype_for_business_server 2019
microsoft skype_for_business_server_subscription_edition 7.0.2046.849
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "platforms": [
            "x64-based Systems"
          ],
          "product": "Skype for Business Server 2015 CU13",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "6.0.9319.885",
              "status": "affected",
              "version": "9319.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "platforms": [
            "x64-based Systems"
          ],
          "product": "Skype for Business Server 2019 CU8",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "7.0.2046.569",
              "status": "affected",
              "version": "2046.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "platforms": [
            "x64-based Systems"
          ],
          "product": "Skype for Business Server Subscription Edition CU1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "7.0.2046.879",
              "status": "affected",
              "version": "2046.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "590D1547-C998-4BDD-BE06-379099E2D9C7",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "D7B2DE75-E220-447A-90F6-D077E611945B",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
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    },
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper neutralization of input during web page generation (\u0027cross-site scripting\u0027) in Skype for Business allows an unauthorized attacker to perform spoofing over a network."
    }
  ],
  "id": "CVE-2026-63523",
  "lastModified": "2026-09-16T19:21:56.487",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "version": "3.1"
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        "impactScore": 3.6,
        "source": "secure@microsoft.com",
        "type": "Secondary"
      },
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          "attackVector": "NETWORK",
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          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
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          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
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        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
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          "options": [
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            },
            {
              "technicalImpact": "partial"
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          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-11T20:56:45.292414Z",
          "version": "2.0.3"
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  },
  "published": "2026-09-08T19:18:07.267",
  "references": [
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      "source": "secure@microsoft.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63523"
    }
  ],
  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "secure@microsoft.com",
      "type": "Secondary"
    }
  ]
}



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