FKIE_CVE-2026-3821

Vulnerability from fkie_nvd - Published: 2026-07-22 07:16 - Updated: 2026-07-22 14:17
Severity
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Supermicro (SMC) SMASH services contain an Arbitrary code execution issue in X14DBG-DAP and X14DBI. An authorized attacker can exploit SMASH’s input capability to compromise data integrity or launch a Denial-of-Service (DoS) attack against the BMC.
References
def9a96e-e099-41a9-bfac-30fd4f82c411https://www.supermicro.com/en/support/security_BMC_IPMI_Jul_2026
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "X14DBG-DAP,X14DBI",
          "vendor": "SMCI",
          "versions": [
            {
              "status": "affected",
              "version": "01.00.16.00"
            },
            {
              "status": "affected",
              "version": "1.03.02.06"
            }
          ]
        }
      ],
      "source": "def9a96e-e099-41a9-bfac-30fd4f82c411"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Supermicro (SMC) SMASH services contain an Arbitrary code execution issue in\u00a0X14DBG-DAP and X14DBI.\nAn authorized attacker can exploit SMASH\u2019s input capability to compromise data integrity or launch a Denial-of-Service (DoS) attack against the BMC."
    }
  ],
  "id": "CVE-2026-3821",
  "lastModified": "2026-07-22T14:17:18.317",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "def9a96e-e099-41a9-bfac-30fd4f82c411",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-3821",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-22T12:55:41.124871Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-22T07:16:35.413",
  "references": [
    {
      "source": "def9a96e-e099-41a9-bfac-30fd4f82c411",
      "url": "https://www.supermicro.com/en/support/security_BMC_IPMI_Jul_2026"
    }
  ],
  "sourceIdentifier": "def9a96e-e099-41a9-bfac-30fd4f82c411",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ],
      "source": "def9a96e-e099-41a9-bfac-30fd4f82c411",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.