CVE-2011-5007

Status: ModifiedHigh (10)—

Stack-based buffer overflow in the CmpWebServer component in 3S CoDeSys 3.4 SP4 Patch 2 and earlier, as used on the ABB AC500 PLC and possibly other products, allows remote attackers to execute arbitrary code via a long URI to TCP port 8080.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Base score: 10

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 73%
Percentile among all scored CVEs: 99
Score date: 10/2/2026

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).

Affected technologies (1)

3ssoftware — Codesys

CWEs

CWE-119

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2011-5007",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
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      "affectedData": [
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          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2011-12-25T01:55:04.647",
  "references": [
    {
      "url": "http://aluigi.altervista.org/adv/codesys_1-adv.txt",
      "source": "cve@mitre.org"
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    {
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      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/47018",
      "tags": [
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      "url": "http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-336-01A.pdf",
      "tags": [
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
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  "descriptions": [
    {
      "lang": "en",
      "value": "Stack-based buffer overflow in the CmpWebServer component in 3S CoDeSys 3.4 SP4 Patch 2 and earlier, as used on the ABB AC500 PLC and possibly other products, allows remote attackers to execute arbitrary code via a long URI to TCP port 8080."
    },
    {
      "lang": "es",
      "value": "El desbordamiento de búfer en la región stack de la memoria en el componente CmpWebServer en 3S CoDeSys versión 3.4 SP4 Patch 2 y anteriores, como es usado en el PLC ABB AC500 y posiblemente en otros productos, permite a los atacantes remotos ejecutar código arbitrario por medio de un URI largo hasta el puerto TCP 8080."
    }
  ],
  "lastModified": "2026-06-16T23:35:46.273",
  "configurations": [
    {
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        {
          "negate": false,
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              "versionEndIncluding": "3.4"
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}