CVE-2005-2177

Status: ModifiedMedium (5)—
Net-SNMP 5.0.x before 5.0.10.2, 5.2.x before 5.2.1.2, and 5.1.3, when net-snmp is using stream sockets such as TCP, allows remote attackers to cause a denial of service (daemon hang and CPU consumption) via a TCP packet of length 1, which triggers an infinite loop.
CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Base score: 5
Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 3.93%
Percentile among all scored CVEs: 90
Score date: 10/7/2026
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)

Net-snmp — Net-snmp
CWEs

CWE-20
References

Raw JSON (NVD)

Show
{
  "id": "CVE-2005-2177",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "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": "2005-07-11T04:00:00.000",
  "references": [
    {
      "url": "http://secunia.com/advisories/15930",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/16999",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/17007",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/17135",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/17217",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/17282",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/17343",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/18635",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/22875",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/23058",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/25373",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/25432",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/25787",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://securitytracker.com/id?1017273",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://sourceforge.net/mailarchive/forum.php?thread_id=7659656&forum_id=12455",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://sunsolve.sun.com/search/document.do?assetkey=1-26-102725-1",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://support.avaya.com/elmodocs2/security/ASA-2005-225.pdf",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2005/dsa-873",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2006:025",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.net-snmp.org/about/ChangeLog.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2005_24_sr.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2007_12_sr.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2007_13_sr.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2005-373.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2005-395.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2005-720.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/451404/100/0/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/451417/100/200/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/451419/100/200/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/451426/100/200/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/14168",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/21256",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.trustix.org/errata/2005/0034/",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.ubuntu.com/usn/usn-190-1",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vmware.com/download/esx/esx-202-200610-patch.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vmware.com/download/esx/esx-213-200610-patch.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vmware.com/download/esx/esx-254-200610-patch.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2006/4502",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2006/4677",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/1883",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9986",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/15930",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/16999",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/17007",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/17135",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/17217",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/17282",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/17343",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/18635",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/22875",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/23058",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/25373",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/25432",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/25787",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://securitytracker.com/id?1017273",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://sourceforge.net/mailarchive/forum.php?thread_id=7659656&forum_id=12455",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://sunsolve.sun.com/search/document.do?assetkey=1-26-102725-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://support.avaya.com/elmodocs2/security/ASA-2005-225.pdf",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2005/dsa-873",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2006:025",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.net-snmp.org/about/ChangeLog.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2005_24_sr.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2007_12_sr.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2007_13_sr.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2005-373.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2005-395.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2005-720.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/451404/100/0/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/451417/100/200/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/451419/100/200/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/451426/100/200/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/14168",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/21256",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.trustix.org/errata/2005/0034/",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ubuntu.com/usn/usn-190-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vmware.com/download/esx/esx-202-200610-patch.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vmware.com/download/esx/esx-213-200610-patch.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vmware.com/download/esx/esx-254-200610-patch.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2006/4502",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2006/4677",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/1883",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9986",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Net-SNMP 5.0.x before 5.0.10.2, 5.2.x before 5.2.1.2, and 5.1.3, when net-snmp is using stream sockets such as TCP, allows remote attackers to cause a denial of service (daemon hang and CPU consumption) via a TCP packet of length 1, which triggers an infinite loop."
    }
  ],
  "lastModified": "2026-06-16T22:14:24.523",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "87B4FDFF-9E09-4AB9-9196-6A01903473B6"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "21E8FC05-D498-4D5D-B5A3-3F16749B7491"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0BD964F4-9196-4641-A854-09DA86BCC890"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "44A07BEF-C759-459E-A144-D37C1A55A9C8"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0.4_pre2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "77D95BAC-CCF3-4E8B-BF31-E277B03C0FA2"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B97B7D0D-68CC-463D-A14B-3651D8DD4C73"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0.6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CFCF39FC-D220-4F4A-8CBF-B993C65671FB"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0.7:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1B5512FA-8B74-4585-ADEF-F710C0DF83A0"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0.8:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "51AAC2EA-8AA7-4303-BD64-74CFC7938D04"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0.9:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C872A9B0-0B3C-47B2-82F5-344BEBA221CD"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.0.10:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AEE816EA-2CDF-440A-9B7A-D772F38A3A17"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.1.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "089CEC52-73AC-41B0-BB7F-F24C42DD16E8"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3E2BAAA8-313D-41F2-A98D-3557331E35B7"
            },
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:5.2.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "88260A4F-4707-4B79-939A-F1EB2CD4D57B"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}