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CVE-2025-4852

Estado: AnalizadaMedia (4.8)—

A vulnerability, which was classified as problematic, has been found in TOTOLINK A3002R 2.1.1-B20230720.1011. This issue affects some unknown processing of the component VPN Page. The manipulation of the argument Comment leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Totolink — A3002r Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-4852",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-4852",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
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              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-05-19T14:27:53.868040Z"
        }
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          "authentication": "MULTIPLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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    ],
    "cvssMetricV31": [
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        "type": "Secondary",
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        "cvssData": {
          "scope": "UNCHANGED",
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          "baseScore": 2.4,
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          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
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          "availabilityImpact": "NONE",
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          "confidentialityImpact": "NONE"
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        "impactScore": 1.4,
        "exploitabilityScore": 0.9
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "confidentialityImpact": "NONE"
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    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
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        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 4.8,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/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",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "PASSIVE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "HIGH",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "cna@vuldb.com",
      "affectedData": [
        {
          "vendor": "TOTOLINK",
          "modules": [
            "VPN Page"
          ],
          "product": "A3002R",
          "versions": [
            {
              "status": "affected",
              "version": "2.1.1-B20230720.1011"
            }
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  ],
  "published": "2025-05-18T04:15:28.157",
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    {
      "url": "https://github.com/fizz-is-on-the-way/Iot_vuls/tree/main/A3002RU_V2/XSS_VPN",
      "tags": [
        "Exploit"
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      "source": "cna@vuldb.com"
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      "url": "https://vuldb.com/?ctiid.309323",
      "tags": [
        "Permissions Required",
        "VDB Entry"
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      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/?id.309323",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
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      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/?submit.575099",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://www.totolink.net/",
      "tags": [
        "Product"
      ],
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://github.com/fizz-is-on-the-way/Iot_vuls/tree/main/A3002RU_V2/XSS_VPN",
      "tags": [
        "Exploit"
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@vuldb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-94"
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      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability, which was classified as problematic, has been found in TOTOLINK A3002R 2.1.1-B20230720.1011. This issue affects some unknown processing of the component VPN Page. The manipulation of the argument Comment leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado una vulnerabilidad clasificada como problemática en TOTOLINK A3002R 2.1.1-B20230720.1011. Este problema afecta a un procesamiento desconocido del componente VPN Page. La manipulación del argumento \"Comment\" provoca ataques de cross site scripting. El ataque puede ejecutarse en remoto. Se ha hecho público el exploit y puede que sea utilizado."
    }
  ],
  "lastModified": "2026-06-17T09:34:09.667",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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  "sourceIdentifier": "cna@vuldb.com"
}