FKIE_CVE-2021-31399

Vulnerability from fkie_nvd - Published: 2021-08-13 13:15 - Updated: 2025-05-30 16:15
Severity
4.6 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
On 2N Access Unit 2.0 2.31.0.40.5 devices, an attacker can pose as the web relay for a man-in-the-middle attack.
References
cve@mitre.orghttps://cds.thalesgroup.com/en/tcs-cert/CVE-2021-31399
cve@mitre.orghttps://excellium-services.com/cert-xlm-advisory/cve-2021-31399/Third Party Advisory
cve@mitre.orghttps://www.2n.cz/en_GB/products/ip-access-control/2n-access-unit-2Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://excellium-services.com/cert-xlm-advisory/cve-2021-31399/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.2n.cz/en_GB/products/ip-access-control/2n-access-unit-2Vendor Advisory
Impacted products
Vendor Product Version
2n access_unit_2.0_firmware 2.31.0.40.5
2n access_unit_2.0 -
To clipboard 

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  "configurations": [
    {
      "nodes": [
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              "matchCriteriaId": "1B23941D-43B0-44F8-9A2B-AE21EC99D392",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "On 2N Access Unit 2.0 2.31.0.40.5 devices, an attacker can pose as the web relay for a man-in-the-middle attack."
    },
    {
      "lang": "es",
      "value": "En los dispositivos 2N Access Unit versi\u00f3n 2.0 2.31.0.40.5, un atacante puede hacerse pasar por el rel\u00e9 web para un ataque de tipo man-in-the-middle."
    }
  ],
  "id": "CVE-2021-31399",
  "lastModified": "2025-05-30T16:15:27.190",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
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          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
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          "confidentialityImpact": "LOW",
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          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L",
          "version": "3.1"
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        "impactScore": 2.5,
        "source": "cve@mitre.org",
        "type": "Secondary"
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          "attackVector": "NETWORK",
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          "baseScore": 5.9,
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          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
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  "published": "2021-08-13T13:15:08.380",
  "references": [
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      "source": "cve@mitre.org",
      "url": "https://cds.thalesgroup.com/en/tcs-cert/CVE-2021-31399"
    },
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-295"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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