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CVE-2013-6166

Status: ModifiedMedium (6.8)—Exploit
Severity6.8Medium · CVSS 2.0
Exploitation probability1.86 %higher than 79% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitAvailablePublished on Exploit-DB

Google Chrome before 29 sends HTTP Cookie headers without first validating that they have the required character-set restrictions, which allows remote attackers to conduct the equivalent of a persistent Logout CSRF attack via a crafted parameter that forces a web application to set a malformed cookie within an HTTP response.

CVSS

Base score
6.8
Version
2.0
Vector
AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
1.86 %
Percentile among all scored CVEs
79
Score date
10/21/2026

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.

Affected technologies (1)

Google — Chrome

CWEs

References

Show 10 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2013-6166",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2014-02-15T14:57:07.970",
  "references": [
    {
      "url": "http://redmine.lighttpd.net/issues/2188",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://seclists.org/oss-sec/2013/q4/117",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://seclists.org/oss-sec/2013/q4/121",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2013/04/03/10",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://code.google.com/p/chromium/issues/detail?id=238041",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://redmine.lighttpd.net/issues/2188",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://seclists.org/oss-sec/2013/q4/117",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://seclists.org/oss-sec/2013/q4/121",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2013/04/03/10",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://code.google.com/p/chromium/issues/detail?id=238041",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Google Chrome before 29 sends HTTP Cookie headers without first validating that they have the required character-set restrictions, which allows remote attackers to conduct the equivalent of a persistent Logout CSRF attack via a crafted parameter that forces a web application to set a malformed cookie within an HTTP response."
    },
    {
      "lang": "es",
      "value": "Google Chrome anterior a 29 envía cabeceras HTTP Cookie sin antes validar que tiene las restricciones character-set necesarias, lo que permite a atacantes remotos realizar el equivalente a un ataque de Logout CSRF persistente a través de un parámetro manipulado que obliga una aplicación web a configurar una cookie malformado dentro de una respuesta HTTP."
    }
  ],
  "lastModified": "2026-06-17T00:00:01.270",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A486D841-E596-47B5-B3EB-952A1B8EE3CC",
              "versionEndIncluding": "28.0.1500.95"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}