CVE-2026-13351

{
  "id": "CVE-2026-13351",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-25T17:16:38.460",
  "lastModified": "2026-10-25T22:10:00.150",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Zephyr's IPv6 network stack can be prevented from receiving or processing future incoming packets by sending a small number of maliciously fragmented IPv6 packets. When such a packet is handled by the fragment-header processing path, the associated RX network packet buffer (allocated from a memory slab) is not released back to the pool. Repeating the malicious packet exhausts all RX buffer slots, after which the device can no longer obtain RX buffers and stops receiving traffic, resulting in a denial of service."
    },
    {
      "lang": "es",
      "value": "La pila de red IPv6 de Zephyr puede impedirse que reciba o procese futuros paquetes entrantes mediante el envío de un pequeño número de paquetes IPv6 fragmentados maliciosamente. Cuando dicho paquete es manejado por la ruta de procesamiento del encabezado de fragmento, el búfer de paquetes de red RX asociado (asignado de un slab de memoria) no se libera de nuevo a la reserva. Repetir el paquete malicioso agota todas las ranuras del búfer RX, después de lo cual el dispositivo ya no puede obtener búferes RX y deja de recibir tráfico, lo que resulta en una denegación de servicio."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "zephyrproject-rtos",
          "product": "Zephyr",
          "defaultStatus": "unaffected",
          "packageName": "Zephyr",
          "repo": "https://github.com/zephyrproject-rtos/zephyr",
          "versions": [
            {
              "version": "*",
              "lessThan": "3.7.2",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4.0.0",
              "lessThan": "4.2.2",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4.3.0",
              "lessThan": "4.3.1",
              "versionType": "git",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-25T18:00:39.412711Z",
          "id": "CVE-2026-13351",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-772"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "4.4.1",
              "matchCriteriaId": "9A947003-969D-455C-8C9D-6AF56EDB9330"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-cv4q-2j56-4wqf",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Patch",
        "Vendor Advisory"
      ]
    }
  ]
}