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CVE-2026-84233

Estado: Pendiente de análisisAlta (7)—

A flaw was found in rpm. A local attacker could supply a specially crafted `.gem` filename containing RPM macro syntax. When a user or automated workflow invokes `rpmuncompress -x` on this file, the macro expansion occurs during command construction. This allows the attacker to execute arbitrary commands with the privileges of the invoking account, leading to a compromise of confidentiality, integrity, and availability.

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.

AV:L + UI:R (usuario invoca rpmuncompress sobre fichero preparado) = explotación en cliente. Macro expansion en construcción de comando = ejecución arbitraria.

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

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or Program

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

RPM — RPMAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-84233",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-84233",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-04T01:59:52.859550Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secalert@redhat.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1
      }
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  "affected": [
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      "source": "secalert@redhat.com",
      "affectedData": [
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          "cpes": [
            "cpe:/a:redhat:hummingbird:1"
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          "vendor": "Red Hat",
          "product": "Red Hat Hardened Images",
          "versions": [
            {
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              "version": "6.1.0-1.hum1",
              "lessThan": "*",
              "versionType": "rpm"
            }
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          "product": "Red Hat Enterprise Linux 6",
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          "product": "Red Hat Enterprise Linux 7",
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          "defaultStatus": "unaffected"
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        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
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          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8",
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          "defaultStatus": "unaffected"
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        {
          "cpes": [
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          "product": "Red Hat Enterprise Linux 9",
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  ],
  "published": "2026-09-01T15:17:43.853",
  "references": [
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:66637",
      "source": "secalert@redhat.com"
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      "url": "https://access.redhat.com/security/cve/CVE-2026-84233",
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    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2478409",
      "source": "secalert@redhat.com"
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  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
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      "source": "secalert@redhat.com",
      "description": [
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          "lang": "en",
          "value": "CWE-78"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in rpm. A local attacker could supply a specially crafted `.gem` filename containing RPM macro syntax. When a user or automated workflow invokes `rpmuncompress -x` on this file, the macro expansion occurs during command construction. This allows the attacker to execute arbitrary commands with the privileges of the invoking account, leading to a compromise of confidentiality, integrity, and availability."
    }
  ],
  "lastModified": "2026-10-02T14:17:11.187",
  "sourceIdentifier": "secalert@redhat.com"
}