Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network.

zetlyn/cve-nvd vulnerability cve CVE-2026-66306 cpe cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_13:*:*:*:*:*:* cpe cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_13_hotfix_2:*:*:*:*:*:* cpe cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_8:*:*:*:*:*:* cpe cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_8_hotfix1:*:*:*:*:*:* cpe cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_8_hotfix2:*:*:*:*:*:* cpe cpe:2.3:a:microsoft:skype_for_business_server_subscription_edition:7.0.2046.849:*:*:*:*:*:*:* known 2026-09-08

https://nvd.nist.gov/vuln/detail/CVE-2026-66306

Properties

cvss6.5
receipt
Source
NVD
Its words
6.5
Read by
field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since
2026-09-29 09:45 UTC
Last answered
2026-10-04 18:16 UTC
Original
open at the source
What the source handed over
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productSkype for Business Server 2015 CU13
receipt
Source
NVD
Its words
Skype for Business Server 2015 CU13
Read by
field:cve.affected[].affectedData[].product
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-04 18:16 UTC
Original
open at the source
2026-09-29 17:49 UTCSkype for Business Server 2015 CU13
2026-09-29 09:45 UTC—
What the source handed over
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statusAnalyzed
receipt
Source
NVD
Its words
Analyzed
Read by
field:cve.vulnStatus
Said since
2026-09-29 09:45 UTC
Last answered
2026-10-04 18:16 UTC
Original
open at the source
What the source handed over
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vendorMicrosoft
receipt
Source
NVD
Its words
Microsoft
Read by
field:cve.affected[].affectedData[].vendor
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-04 18:16 UTC
Original
open at the source
2026-09-29 17:49 UTCMicrosoft
2026-09-29 09:45 UTC—
What the source handed over
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          "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"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 3.6,
          "source": "secure@microsoft.com",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-66306",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-08T18:52:48.290572Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-08T19:18:08.200",
    "references": [
      {
        "source": "secure@microsoft.com",
        "tags": [
          "Patch",
          "Vendor Advisory"
        ],
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66306"
      }
    ],
    "sourceIdentifier": "secure@microsoft.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-209"
          }
        ],
        "source": "secure@microsoft.com",
        "type": "Primary"
      }
    ]
  }
}

Text

Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network.