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CVE-2026-103242

Estado: Pendiente de análisisAlta (7.1)—

A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content — of attacker-chosen length — past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.

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.

Buffer overflow en rpm con interacción del usuario (UI:R) al procesar paquete RPM malicioso. Permite ejecución de código en el cliente y manipulación de archivos/datos.

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 ContentRestrict File and Directory PermissionsPrivileged Account ManagementRemote Data StorageLimit Software InstallationExecution Prevention

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)

Mostrar
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  "cveTags": [],
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        "ssvcData": {
          "id": "CVE-2026-103242",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-30T16:36:10.336744Z"
        }
      }
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    "cvssMetricV31": [
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        "source": "secalert@redhat.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 5.2,
        "exploitabilityScore": 1.8
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      "affectedData": [
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          "cpes": [
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          "product": "Red Hat Enterprise Linux 7",
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          "defaultStatus": "affected"
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          "cpes": [
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          "vendor": "Red Hat",
          "product": "Red Hat Hardened Images",
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          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
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  "published": "2026-09-30T12:17:12.653",
  "references": [
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      "url": "https://access.redhat.com/security/cve/CVE-2026-103242",
      "source": "secalert@redhat.com"
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    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543866",
      "source": "secalert@redhat.com"
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  "vulnStatus": "Awaiting Analysis",
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      "source": "secalert@redhat.com",
      "description": [
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          "value": "CWE-122"
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  "descriptions": [
    {
      "lang": "en",
      "value": "A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content — of attacker-chosen length — past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package."
    }
  ],
  "lastModified": "2026-09-30T17:16:42.773",
  "sourceIdentifier": "secalert@redhat.com"
}