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CVE-2020-10023

Status: ModifiedMedium (6.8)—

The shell subsystem contains a buffer overflow, whereby an adversary with physical access to the device is able to cause a memory corruption, resulting in denial of service or possibly code execution within the Zephyr kernel. See NCC-NCC-019 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.

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)

Zephyrproject — Zephyr

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-10023",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/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": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
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        "userInteractionRequired": false
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    "cvssMetricV31": [
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        "type": "Secondary",
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        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.9,
          "attackVector": "PHYSICAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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        "impactScore": 6,
        "exploitabilityScore": 0.3
      },
      {
        "type": "Primary",
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        "cvssData": {
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          "integrityImpact": "HIGH",
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          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
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        "exploitabilityScore": 0.9
      }
    ]
  },
  "affected": [
    {
      "source": "vulnerabilities@zephyrproject.org",
      "affectedData": [
        {
          "vendor": "zephyrproject-rtos",
          "product": "zephyr",
          "versions": [
            {
              "status": "affected",
              "version": "1.14.0",
              "lessThan": "unspecified",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.1.0",
              "lessThan": "unspecified",
              "versionType": "custom"
            }
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  ],
  "published": "2020-05-11T23:15:11.520",
  "references": [
    {
      "url": "https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10023",
      "source": "vulnerabilities@zephyrproject.org"
    },
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      "url": "https://github.com/zephyrproject-rtos/zephyr/pull/23304",
      "tags": [
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        "Third Party Advisory"
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      "tags": [
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      ],
      "source": "vulnerabilities@zephyrproject.org"
    },
    {
      "url": "https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10023",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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    {
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      "tags": [
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "vulnerabilities@zephyrproject.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The shell subsystem contains a buffer overflow, whereby an adversary with physical access to the device is able to cause a memory corruption, resulting in denial of service or possibly code execution within the Zephyr kernel. See NCC-NCC-019 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions."
    },
    {
      "lang": "es",
      "value": "El subsistema shell contiene un desbordamiento de búfer, por lo que un adversario con acceso físico al dispositivo es capaz de causar una corrupción de la memoria, resultando en una denegación de servicio o posiblemente en una ejecución de código dentro del kernel de Zephyr. Consulte NCC-NCC-019. Este problema afecta a: zephyrproject-rtos zephyr versión 1.14.0 y versiones posteriores. Versión 2.1.0 y versiones posteriores."
    }
  ],
  "lastModified": "2026-06-17T02:47:13.453",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:zephyrproject:zephyr:1.14.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C64F3EAF-D161-42D2-80B4-5459C0AB45BE"
            },
            {
              "criteria": "cpe:2.3:o:zephyrproject:zephyr:2.1.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EF33DD80-0286-477C-88A4-FCEC0D80F520"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "vulnerabilities@zephyrproject.org"
}