« Volver al listado

CVE-2026-42799

Estado: AnalizadaCrítica (9.8)—

Out-of-bounds read vulnerability in ASR Kestrel (nr_fw modules) allows Overflow Buffers.

This vulnerability is associated with program files Code/Nr/nr_fw/RA/src/NrPwrCtrl.C.

This issue affects Kestrel: before 2026/02/10.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector CVSS AV:N/AC:L/PR:N/UI:N indica red sin privilegios ni interacción (T1190). Out-of-bounds read (CWE-125) permite lectura de memoria (T1005) y potencial ejecución de código (T1059) mediante desbordamiento.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Asrmicro — Asr1803 Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-42799",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-42799",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-04-30T13:01:32.295766Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "68630edc-a58c-4cbd-9b01-0e130455c8ae",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 7.4,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.7,
        "exploitabilityScore": 3.1
      },
      {
        "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": "68630edc-a58c-4cbd-9b01-0e130455c8ae",
      "affectedData": [
        {
          "vendor": "ASR",
          "modules": [
            "nr_fw"
          ],
          "product": "Kestrel",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2026/02/10",
              "versionType": "date"
            }
          ],
          "programFiles": [
            "Code/Nr/nr_fw/RA/src/NrPwrCtrl.c"
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-04-30T09:16:03.473",
  "references": [
    {
      "url": "https://www.asrmicro.com/en/goods/psirt?cid=44",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "68630edc-a58c-4cbd-9b01-0e130455c8ae"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "68630edc-a58c-4cbd-9b01-0e130455c8ae",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Out-of-bounds read vulnerability in ASR Kestrel (nr_fw modules) allows Overflow Buffers.\n\n This vulnerability is associated with program files Code/Nr/nr_fw/RA/src/NrPwrCtrl.C.\n\n\n\nThis issue affects Kestrel: before 2026/02/10."
    }
  ],
  "lastModified": "2026-06-17T10:48:26.083",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:asrmicro:asr1803_firmware:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4E323315-1563-409C-AE82-31FD6016DFA3",
              "versionEndExcluding": "1.216.002"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:asrmicro:asr1803:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "5DCCB900-92E3-4060-B687-052F378AC304"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "68630edc-a58c-4cbd-9b01-0e130455c8ae"
}