CVE-2013-4211

Status: ModifiedCritical (9.8)—Exploit

Severity9.8Critical · CVSS 3.1

Exploitation probability71 %higher than 99% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitAvailablePublished on Exploit-DB · Metasploit module (reliable, widely available exploit)

A Code Execution Vulnerability exists in OpenX Ad Server 2.8.10 due to a backdoor in flowplayer-3.1.1.min.js library, which could let a remote malicious user execute arbitrary PHP code

CVSS

Base score: 9.8
Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 71 %
Percentile among all scored CVEs: 99
Score date: 10/26/2026

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.

Metasploit module (reliable, widely available exploit) · OpenX Backdoor PHP Code Execution
Published on Exploit-DB · OpenX - Backdoor PHP Code Execution (Metasploit) (8/12/2013)

Affected technologies (1)

Openx — Openx

CWEs

CWE-94

References

Show 10 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2013-4211",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "OpenX",
          "product": "Ad Server",
          "versions": [
            {
              "status": "affected",
              "version": "2.8.10"
            }
          ]
        }
      ]
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  ],
  "published": "2020-02-14T20:15:09.650",
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      "source": "secalert@redhat.com"
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    },
    {
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://packetstormsecurity.com/files/cve/CVE-2013-4211",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Code Execution Vulnerability exists in OpenX Ad Server 2.8.10 due to a backdoor in flowplayer-3.1.1.min.js library, which could let a remote malicious user execute arbitrary PHP code"
    },
    {
      "lang": "es",
      "value": "Se presenta una Vulnerabilidad de Ejecución de Código en OpenX Ad Server versión 2.8.10, debido a un backdoor en la biblioteca flowplayer-3.1.1.min.js, lo que podría permitir a un usuario malicioso remoto ejecutar código PHP arbitrario."
    }
  ],
  "lastModified": "2026-06-16T23:56:49.413",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openx:openx:2.8.10:*:*:*:*:*:*:*",
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            }
          ],
          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "secalert@redhat.com"
}