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CVE-2026-73705

Status: ModifiedHigh (8.8)—

An arbitrary file write vulnerability in the API of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to escalate privileges. Successful exploitation of this vulnerability may enable the attacker to execute arbitrary commands on the underlying operating system, leading to complete compromise of the affected system.

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).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Vulnerabilidad remota (AV:N) con autenticación previa (PR:L) que permite escritura arbitraria de archivos para escalar privilegios y ejecutar comandos. T1210 por red sin privilegios de administrador; T1068 como impacto (escalada a admin/root); T1059 por ejecución OS confirmada.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Threat Intelligence ProgramPrivileged Account ManagementExecution PreventionDisable or Remove Feature or ProgramApplication Isolation and SandboxingExploit Protection

Affected technologies (1)

Arubanetworks — Fabric Composer

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-73705",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-02T15:17:48.284705Z"
        }
      }
    ],
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        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-alert@hpe.com",
      "affectedData": [
        {
          "vendor": "Hewlett Packard Enterprise (HPE)",
          "product": "Fabric Composer",
          "versions": [
            {
              "status": "affected",
              "version": "7.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "7.3.3"
            }
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          "defaultStatus": "affected"
        }
      ]
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  ],
  "published": "2026-09-01T20:17:17.870",
  "references": [
    {
      "url": "https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05133en_us&docLocale=en_US",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-alert@hpe.com"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "lang": "en",
      "value": "An arbitrary file write vulnerability in the API of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to escalate privileges. Successful exploitation of this vulnerability may enable the attacker to execute arbitrary commands on the underlying operating system, leading to complete compromise of the affected system."
    }
  ],
  "lastModified": "2026-09-02T16:17:20.140",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:arubanetworks:fabric_composer:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "E34E933B-FAAD-41AB-8FC3-0368FF82F047",
              "versionEndExcluding": "7.3.4"
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  "sourceIdentifier": "security-alert@hpe.com"
}