CVE-2005-1857

Status: ModifiedHigh (7.5)—

Format string vulnerability in simpleproxy before 3.4 allows remote malicious HTTP proxies to execute arbitrary code via format string specifiers in a reply.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Base score: 7.5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 4.32%
Percentile among all scored CVEs: 91
Score date: 10/8/2026

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)

Simpleproxy — Simpleproxy

CWEs

NVD-CWE-Other

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2005-1857",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "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": true,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "security@debian.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2005-09-02T22:03:00.000",
  "references": [
    {
      "url": "http://secunia.com/advisories/16567/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://sourceforge.net/project/shownotes.php?group_id=604&release_id=351847",
      "tags": [
        "Patch"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://www.debian.org/security/2005/dsa-786",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://www.kb.cert.org/vuls/id/139421",
      "tags": [
        "US Government Resource"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/14666",
      "tags": [
        "Patch"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/22016",
      "source": "security@debian.org"
    },
    {
      "url": "http://secunia.com/advisories/16567/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://sourceforge.net/project/shownotes.php?group_id=604&release_id=351847",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2005/dsa-786",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.kb.cert.org/vuls/id/139421",
      "tags": [
        "US Government Resource"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/14666",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/22016",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Format string vulnerability in simpleproxy before 3.4 allows remote malicious HTTP proxies to execute arbitrary code via format string specifiers in a reply."
    }
  ],
  "lastModified": "2026-06-16T22:13:48.900",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:simpleproxy:simpleproxy:2.2b:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B86D31EB-EDD0-4160-8ED6-FD68CAEA10E7"
            },
            {
              "criteria": "cpe:2.3:a:simpleproxy:simpleproxy:3.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C6266431-B372-46D5-BCBC-D65F795966EE"
            },
            {
              "criteria": "cpe:2.3:a:simpleproxy:simpleproxy:3.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "254BE71A-1B14-48BC-A114-D32F699599E8"
            },
            {
              "criteria": "cpe:2.3:a:simpleproxy:simpleproxy:3.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "99ECA1AE-919D-4E3C-B6AB-E9A74BDCF379"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@debian.org"
}