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CVE-2023-45234

Status: ModifiedHigh (8.8)—

EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers option from a DHCPv6 Advertise message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.

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).

Affected technologies (1)

Tianocore — Edk2

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2023-45234",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-06-17T20:09:26.371967Z"
        }
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    "cvssMetricV31": [
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      "url": "https://www.kb.cert.org/vuls/id/132380",
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  "vulnStatus": "Modified",
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      "source": "infosec@edk2.groups.io",
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers option from a DHCPv6 Advertise message. This\n vulnerability can be exploited by an attacker to gain unauthorized \naccess and potentially lead to a loss of Confidentiality, Integrity and/or Availability."
    },
    {
      "lang": "es",
      "value": "EDK2's Network Package es susceptible a una vulnerabilidad de desbordamiento de búfer al procesar la opción de servidores DNS desde un mensaje de publicidad DHCPv6. Un atacante puede aprovechar esta vulnerabilidad para obtener acceso no autorizado y potencialmente provocar una pérdida de confidencialidad, integridad y/o disponibilidad."
    }
  ],
  "lastModified": "2026-06-17T06:28:30.170",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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}