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CVE-2016-1882

Status: ModifiedHigh (7.5)—

FreeBSD 9.3 before p33, 10.1 before p26, and 10.2 before p9 allow remote attackers to cause a denial of service (kernel crash) via vectors related to creating a TCP connection with the TCP_MD5SIG and TCP_NOOPT socket options.

CVSS

Exploitation probability (EPSS)

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)

Freebsd — Freebsd

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2016-1882",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2016-01-29T19:59:08.060",
  "references": [
    {
      "url": "http://www.securitytracker.com/id/1034677",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:05.tcp.asc",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securitytracker.com/id/1034677",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:05.tcp.asc",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-19"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "FreeBSD 9.3 before p33, 10.1 before p26, and 10.2 before p9 allow remote attackers to cause a denial of service (kernel crash) via vectors related to creating a TCP connection with the TCP_MD5SIG and TCP_NOOPT socket options."
    },
    {
      "lang": "es",
      "value": "FreeBSD 9.3 en versiones anteriores a p33, 10.1 en versiones anteriores a p26 y 10.2 en versiones anteriores a p9 permiten a atacantes remotos causar una denegación de servicio (caída de kernel) a través de vectores relacionados con la creación de una conexión TCP con las opciones socket TCP_MD5SIG y TCP_NOOPT."
    }
  ],
  "lastModified": "2026-06-17T00:42:47.747",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:9.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "57052F01-8695-4C63-A947-7671375B9312"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:10.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F6D63B21-9D2E-4B15-9E60-6181D44B1F55"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:10.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "21EFF723-7B5A-4712-8A6B-56CADAA4BFD5"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}