CVE-2009-2544

Status: ModifiedMedium (6.8)—💥 Exploit

Directory traversal vulnerability in the Marcelo Costa FileServer component 1.0 for Microsoft Windows Live Messenger and Messenger Plus! Live (MPL) allows remote authenticated users to list arbitrary directories and read arbitrary files via a .. (dot dot) in a pathname.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:S/C:C/I:N/A:N
Base score: 6.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 3.43%
Percentile among all scored CVEs: 89
Score date: 10/7/2026

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).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Published on Exploit-DB · Microsoft Windows Live Messenger Plus! Fileserver 1.0 - Directory Traversal (7/9/2009)

Affected technologies (1)

Marcelo Costa — Fileserver

CWEs

CWE-22

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2009-2544",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:C/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
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      "source": "cve@mitre.org",
      "affectedData": [
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          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
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      ]
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  ],
  "published": "2009-07-20T18:30:01.343",
  "references": [
    {
      "url": "http://www.exploit-db.com/exploits/9093",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.exploit-db.com/exploits/9093",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Directory traversal vulnerability in the Marcelo Costa FileServer component 1.0 for Microsoft Windows Live Messenger and Messenger Plus! Live (MPL) allows remote authenticated users to list arbitrary directories and read arbitrary files via a .. (dot dot) in a pathname."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de salto de directorio en el componente Marcelo Costa FileServer v1.0 para Microsoft Windows Live Messenger and Messenger Plus! Live (MPL) permite a usuarios autenticados remotamente listar directorios de su elección y leer ficheros de su elección al utilizar .. (punto punto) en la ruta del fichero."
    }
  ],
  "lastModified": "2026-06-16T23:09:40.690",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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            }
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          "operator": "OR"
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              "criteria": "cpe:2.3:a:marcelo_costa:fileserver:1.0:*:*:*:*:*:*:*",
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