« Back to list

CVE-2021-30203

Status: ModifiedMedium (6.1)—💥 Exploit

A reflected cross-site scripting (XSS) vulnerability in the zero parameter of dzzoffice 2.02.1_SC_UTF8 allows attackers to execute arbitrary web scripts or HTML.

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).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Affected technologies (1)

Dzzoffice — Dzzoffice

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2021-30203",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-30203",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-12-04T21:02:09.651338Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2023-06-27T14:15:09.667",
  "references": [
    {
      "url": "https://github.com/zyx0814/dzzoffice/issues/183",
      "tags": [
        "Exploit",
        "Issue Tracking"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/zyx0814/dzzoffice/issues/183",
      "tags": [
        "Exploit",
        "Issue Tracking"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A reflected cross-site scripting (XSS) vulnerability in the zero parameter of dzzoffice 2.02.1_SC_UTF8 allows attackers to execute arbitrary web scripts or HTML."
    }
  ],
  "lastModified": "2026-06-17T03:49:52.007",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:dzzoffice:dzzoffice:2.02.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0ECA901D-850D-468C-B516-01F29417313D"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}