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CVE-2022-28749

Status: ModifiedMedium (4.3)—

Zooms On-Premise Meeting Connector MMR before version 4.8.113.20220526 fails to properly check the permissions of a Zoom meeting attendee. As a result, a threat actor in the Zooms waiting room can join the meeting without the consent of the host.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Zoom — On-premise Meeting Connector Multimedia Router

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2022-28749",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@zoom.us",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@zoom.us",
      "affectedData": [
        {
          "vendor": "Zoom Video Communications Inc",
          "product": "On-Premise Meeting Connectors",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "4.8.113.20220526",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-06-15T21:15:09.377",
  "references": [
    {
      "url": "https://explore.zoom.us/en/trust/security/security-bulletin/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@zoom.us"
    },
    {
      "url": "https://explore.zoom.us/en/trust/security/security-bulletin/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Zooms On-Premise Meeting Connector MMR before version 4.8.113.20220526 fails to properly check the permissions of a Zoom meeting attendee. As a result, a threat actor in the Zooms waiting room can join the meeting without the consent of the host."
    },
    {
      "lang": "es",
      "value": "Zooms On-Premise Meeting Connector MMR versiones anteriores a 4.8.113.20220526, no comprueba correctamente los permisos de los asistentes a las reuniones de Zoom. Como resultado, un actor de la amenaza en la sala de espera de Zooms puede unirse a la reunión sin el consentimiento del anfitrión"
    }
  ],
  "lastModified": "2026-06-17T04:38:57.617",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:zoom:on-premise_meeting_connector_multimedia_router:4.8.113.20220526:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3B840532-EECC-4736-A15D-7038423037E1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@zoom.us"
}