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CVE-2018-15371

Estado: ModificadaMedia (6.7)—

A vulnerability in the shell access request mechanism of Cisco IOS XE Software could allow an authenticated, local attacker to bypass authentication and gain unrestricted access to the root shell of an affected device. The vulnerability exists because the affected software has insufficient authentication mechanisms for certain commands. An attacker could exploit this vulnerability by requesting access to the root shell of an affected device, after the shell access feature has been enabled. A successful exploit could allow the attacker to bypass authentication and gain unrestricted access to the root shell of the affected device.

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).

Tecnologías afectadas (1)

Cisco — IOS XE

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-15371",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2018-15371",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-11-25T18:51:17.610819Z"
        }
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    "cvssMetricV2": [
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          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
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        "acInsufInfo": false,
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        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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    "cvssMetricV30": [
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        "type": "Primary",
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        "cvssData": {
          "scope": "UNCHANGED",
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          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
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          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
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        "exploitabilityScore": 0.8
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  "affected": [
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      "affectedData": [
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          "vendor": "Cisco",
          "product": "Cisco IOS XE Software",
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  "published": "2018-10-05T14:29:06.217",
  "references": [
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-shell-access",
      "tags": [
        "Vendor Advisory"
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      "source": "psirt@cisco.com"
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    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-shell-access",
      "tags": [
        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "psirt@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
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    {
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      "source": "nvd@nist.gov",
      "description": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the shell access request mechanism of Cisco IOS XE Software could allow an authenticated, local attacker to bypass authentication and gain unrestricted access to the root shell of an affected device. The vulnerability exists because the affected software has insufficient authentication mechanisms for certain commands. An attacker could exploit this vulnerability by requesting access to the root shell of an affected device, after the shell access feature has been enabled. A successful exploit could allow the attacker to bypass authentication and gain unrestricted access to the root shell of the affected device."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el mecanismo de petición de acceso al shell de Cisco IOS XE Software podría permitir que un atacante local autenticado omita la autenticación y obtenga acceso sin restricciones al shell root de un dispositivo afectado. La vulnerabilidad existe debido a que el software afectado tiene mecanismos de autenticación insuficientes para ciertos comandos. Un atacante podría explotar esta vulnerabilidad solicitando acceso al shell root de un dispositivo afectado, una vez se ha habilitado la funcionalidad de acceso al shell. Si se explota correctamente, esta vulnerabilidad podría permitir que el atacante omita la autenticación y obtenga acceso sin restricciones al shell root del dispositivo afectado."
    }
  ],
  "lastModified": "2026-06-17T01:42:20.250",
  "configurations": [
    {
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        {
          "negate": false,
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  "sourceIdentifier": "psirt@cisco.com"
}