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CVE-2026-70458

Estado: Pendiente de análisisAlta (8.8)—

rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt memory by triggering HLINK_BUMP processing on file entries with the FLAG_HLINKED flag set while the hard-link preservation option is inactive. Attackers can exploit the missing F_SUM field in the file_struct layout to access memory past the end of the allocated structure, corrupting adjacent heap or stack data.

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.

CVE remoto sin autenticación (AV:N, PR:N, UI:N) en rsync; corrupción de memoria OOB puede derivar en ejecución de código arbitrario o negación de servicio (VI:L, VA:H).

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

Privileged Account ManagementFilter Network TrafficVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software Installation

Tecnologías afectadas (1)

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

Rsync — RsyncAI

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-70458",
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          "id": "CVE-2026-70458",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-08-13T15:36:20.323592Z"
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          "integrityImpact": "LOW",
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      }
    ],
    "cvssMetricV40": [
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        "cvssData": {
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          "attackVector": "NETWORK",
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          "valueDensity": "NOT_DEFINED",
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          "integrityRequirement": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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      "affectedData": [
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              "versionType": "semver",
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  "published": "2026-08-13T15:19:59.663",
  "references": [
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      "url": "https://github.com/RsyncProject/rsync/releases/tag/v3.5.0",
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      "url": "https://github.com/RsyncProject/rsync/security/advisories/GHSA-gg3m-4m9m-268h",
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      "lang": "en",
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    }
  ],
  "lastModified": "2026-09-08T20:28:37.587",
  "sourceIdentifier": "disclosure@vulncheck.com"
}