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CVE-2021-45856

Estado: ModificadaAlta (7.5)—

El servicio telnet de Accu-Time Systems MAXIMUS versión 1.0, sufre un desbordamiento de búfer remoto que causa el bloqueo del servicio telnet

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)

Accu-time — Maximus Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-45856",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
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  "affected": [
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      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
            }
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  "published": "2022-01-10T14:11:06.480",
  "references": [
    {
      "url": "https://packetstormsecurity.com/files/165392/Accu-Time-Systems-MAXIMUS-1.0-Buffer-Overflow-Denial-Of-Service.html",
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      "url": "https://packetstormsecurity.com/files/165392/Accu-Time-Systems-MAXIMUS-1.0-Buffer-Overflow-Denial-Of-Service.html",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Accu-Time Systems MAXIMUS 1.0 telnet service suffers from a remote buffer overflow which causes the telnet service to crash"
    },
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      "lang": "es",
      "value": "El servicio telnet de Accu-Time Systems MAXIMUS versión 1.0, sufre un desbordamiento de búfer remoto que causa el bloqueo del servicio telnet"
    }
  ],
  "lastModified": "2026-06-17T04:14:10.100",
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