FKIE_CVE-2026-21671

Vulnerability from fkie_nvd - Published: 2026-03-12 15:16 - Updated: 2026-03-12 21:07
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Summary
A vulnerability allowing an authenticated user with the Backup Administrator role to perform remote code execution (RCE) in high availability (HA) deployments of Veeam Backup & Replication.
References
support@hackerone.comhttps://www.veeam.com/kb4831
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability allowing an authenticated user with the Backup Administrator role to perform remote code execution (RCE) in high availability (HA) deployments of Veeam Backup \u0026 Replication."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad que permite a un usuario autenticado con el rol de Administrador de Copias de Seguridad realizar ejecuci\u00f3n remota de c\u00f3digo (RCE) en implementaciones de alta disponibilidad (HA) de Veeam Backup \u0026amp; Replication."
    }
  ],
  "id": "CVE-2026-21671",
  "lastModified": "2026-03-12T21:07:53.427",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 6.0,
        "source": "support@hackerone.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-12T15:16:13.630",
  "references": [
    {
      "source": "support@hackerone.com",
      "url": "https://www.veeam.com/kb4831"
    }
  ],
  "sourceIdentifier": "support@hackerone.com",
  "vulnStatus": "Awaiting Analysis"
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.