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CVE-2021-28123

Status: ModifiedCritical (9.8)—

Undocumented Default Cryptographic Key Vulnerability in Cohesity DataPlatform version 6.3 prior 6.3.1g, 6.4 up to 6.4.1c and 6.5.1 through 6.5.1b. The ssh key can provide an attacker access to the linux system in the affected version.

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)

Cohesity — Cohesity Dataplatform

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-28123",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-04-02T15:15:13.270",
  "references": [
    {
      "url": "https://github.com/cohesity/SecAdvisory/blob/master/CVE-2021-28123.md",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/cohesity/SecAdvisory/blob/master/CVE-2021-28123.md",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1188"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Undocumented Default Cryptographic Key Vulnerability in Cohesity DataPlatform version 6.3 prior 6.3.1g, 6.4 up to 6.4.1c and 6.5.1 through 6.5.1b. The ssh key can provide an attacker access to the linux system in the affected version."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de Clave Criptográfica Predeterminada No Documentada en Cohesity DataPlatform versiones 6.3 anteriores a 6.3.1g, versiones 6.4 hasta 6.4.1cy, versiones 6.5.1 hasta 6.5.1b. La clave ssh puede proporcionar a un atacante acceso al sistema Linux en la versión afectada."
    }
  ],
  "lastModified": "2026-06-17T03:45:50.267",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cohesity:cohesity_dataplatform:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "68740ADE-75F1-4DD3-BC0F-2619200D71F7",
              "versionEndExcluding": "6.3.1g",
              "versionStartIncluding": "6.3"
            },
            {
              "criteria": "cpe:2.3:a:cohesity:cohesity_dataplatform:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E23D34BE-A8B9-4B51-85C3-F79A784555E2",
              "versionEndExcluding": "6.4.1c",
              "versionStartIncluding": "6.4"
            },
            {
              "criteria": "cpe:2.3:a:cohesity:cohesity_dataplatform:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ACAACEC2-0E9E-490A-A928-33E6336F8435",
              "versionEndExcluding": "6.5.1b",
              "versionStartIncluding": "6.5.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}