CVE-2026-34866

Full vulnerability record from the local CVENow database.

Description

Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.

Severity

MEDIUM

CVSS score

5.1 (v3.1)

Vulnerability status

Analyzed

Source identifier

[email protected]

Published

2026-04-13 07:16:50.127000

Last modified

2026-10-26 21:10:00.170000

View original CVE JSON

{
  "id": "CVE-2026-34866",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-13T07:16:50.127",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de escritura fuera de límites en el módulo WEB. Impacto: La explotación exitosa de esta vulnerabilidad afectará la disponibilidad y la confidencialidad."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Huawei",
          "product": "HarmonyOS",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "6.0.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "baseScore": 5.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 2.5
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-13T13:07:32.491517Z",
          "id": "CVE-2026-34866",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:huawei:harmonyos:6.0.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "0EBE30DD-E146-4A6A-BE68-DEF9D4D0B2A8"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://consumer.huawei.com/en/support/bulletinwearables/2026/4/",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}