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FKIE_CVE-2026-54205

Vulnerability from fkie_nvd - Published: 2026-08-07 10:16 - Updated: 2026-09-07 13:20
Severity
6.3 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Summary
Tobit Laboratories AG TeamDavid's Webbox 's link storing functionality (//ServerClient_celink.htm) accepts a “pathname” parameter, which can be set to network locations using UNC paths (e.g., “\\Server\Share”). The server processes these paths without validation, resulting in outbound connection attempts to attacker-controlled SMB servers. This enables authenticated attackers to trigger the server to authenticate to arbitrary SMB endpoints, potentially exposing NTLM authentication information (such as NTLM hashes). If outbound connections to port 445 (SMB) are permitted, attackers can use this to conduct SMB relay or credential theft attacks. Exploitation of the “pathname” parameter is possible without authentication. This issue affects TeamDavid before Rollout 528. Starting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality.
References
vulnerability@ncsc.chhttps://chayns.net/77892-10814/tapp/763210?postId=11454
vulnerability@ncsc.chhttps://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/
134c704f-9b21-4f2e-91b3-4a467353bcc0https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Webbox"
          ],
          "product": "TeamDavid",
          "vendor": "Tobit Laboratories AG",
          "versions": [
            {
              "lessThan": "Rollout 528",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "vulnerability@ncsc.ch"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Tobit Laboratories AG TeamDavid\u0027s Webbox \u0027s link storing functionality (//ServerClient_celink.htm)\n accepts a \u201cpathname\u201d parameter, which can be set to network locations \nusing UNC paths (e.g., \u201c\\\\Server\\Share\u201d). The server processes these \npaths without validation, resulting in outbound connection attempts to \nattacker-controlled SMB servers. This enables authenticated attackers to\n trigger the server to authenticate to arbitrary SMB endpoints, \npotentially exposing NTLM authentication information (such as NTLM \nhashes). If outbound connections to port 445 (SMB) are permitted, \nattackers can use this to conduct SMB relay or credential theft attacks.\n Exploitation of the \u201cpathname\u201d parameter is possible without \nauthentication.\u00a0This issue affects TeamDavid before Rollout 528.\n\nStarting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality."
    }
  ],
  "id": "CVE-2026-54205",
  "lastModified": "2026-09-07T13:20:27.003",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "vulnerability@ncsc.ch",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-54205",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-07T11:10:03.274543Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-07T10:16:57.347",
  "references": [
    {
      "source": "vulnerability@ncsc.ch",
      "url": "https://chayns.net/77892-10814/tapp/763210?postId=11454"
    },
    {
      "source": "vulnerability@ncsc.ch",
      "url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/"
    }
  ],
  "sourceIdentifier": "vulnerability@ncsc.ch",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "vulnerability@ncsc.ch",
      "type": "Secondary"
    }
  ]
}



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