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CVE-2023-22339

Status: ModifiedHigh (7.5)—

Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product.

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)

Contec — Conprosys HMI System

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2023-22339",
  "cveTags": [],
  "metrics": {
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          "options": [
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              "exploitation": "none"
            },
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              "automatable": "no"
            },
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2025-04-03T20:03:37.484856Z"
        }
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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      "source": "vultures@jpcert.or.jp"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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      "value": "Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de control de acceso inadecuado en CONPROSYS HMI System (CHS) Ver.3.4.5 y anteriores permite que un atacante remoto no autenticado evite la restricción de acceso y obtenga el certificado del servidor, incluida la clave privada del producto."
    }
  ],
  "lastModified": "2026-06-17T05:35:06.573",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndIncluding": "3.4.5"
            }
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          "operator": "OR"
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      ]
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  "sourceIdentifier": "vultures@jpcert.or.jp"
}