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CVE-2019-25544

Estado: AnalizadaMedia (6.9)—

Pidgin 2.13.0 contains a denial of service vulnerability that allows local attackers to crash the application by providing an excessively long username string during account creation. Attackers can input a buffer of 1000 characters in the username field and trigger a crash when joining a chat, causing the application to become unavailable.

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)

Pidgin — Pidgin

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2019-25544",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2019-25544",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
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              "technicalImpact": "partial"
            }
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          "version": "2.0.3",
          "timestamp": "2026-03-24T14:30:55.803437Z"
        }
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    "cvssMetricV31": [
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          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
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        "exploitabilityScore": 2.5
      },
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
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        "exploitabilityScore": 1.8
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    "cvssMetricV40": [
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        "type": "Secondary",
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        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
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          "Automatable": "NOT_DEFINED",
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          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
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          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
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          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
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          "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"
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      "source": "disclosure@vulncheck.com",
      "affectedData": [
        {
          "vendor": "Pidgin",
          "product": "Pidgin",
          "versions": [
            {
              "status": "affected",
              "version": "2.13.0"
            }
          ]
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      ]
    }
  ],
  "published": "2026-03-21T13:16:15.270",
  "references": [
    {
      "url": "https://pidgin.im/",
      "tags": [
        "Product"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.exploit-db.com/exploits/46930",
      "tags": [
        "Exploit",
        "VDB Entry"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/pidgin-denial-of-service-via-malformed-username",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-807"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Pidgin 2.13.0 contains a denial of service vulnerability that allows local attackers to crash the application by providing an excessively long username string during account creation. Attackers can input a buffer of 1000 characters in the username field and trigger a crash when joining a chat, causing the application to become unavailable."
    },
    {
      "lang": "es",
      "value": "Pidgin 2.13.0 contiene una vulnerabilidad de denegación de servicio que permite a atacantes locales colapsar la aplicación al proporcionar una cadena de nombre de usuario excesivamente larga durante la creación de la cuenta. Los atacantes pueden introducir un búfer de 1000 caracteres en el campo de nombre de usuario y provocar un colapso al unirse a un chat, haciendo que la aplicación deje de estar disponible."
    }
  ],
  "lastModified": "2026-06-17T02:32:38.487",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:pidgin:pidgin:2.13.0:*:*:*:*:*:*:*",
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            }
          ],
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  "sourceIdentifier": "disclosure@vulncheck.com"
}