CVE-2001-0996

Status: ModifiedMedium (6.4)—

POP3Lite before 0.2.4 does not properly quote a . (dot) in an email message, which could allow a remote attacker to append arbitrary text to the end of an email message, which could then be interpreted by various mail clients as valid POP server responses or other input that could cause clients to crash or otherwise behave unexpectedly.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:P
Base score: 6.4

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 1.69%
Percentile among all scored CVEs: 76
Score date: 10/10/2026

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)

Pop3lite — Pop3lite

CWEs

NVD-CWE-Other

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2001-0996",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "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": "2001-09-02T04:00:00.000",
  "references": [
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2001-08/0436.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/3278",
      "tags": [
        "Exploit",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/7075",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2001-08/0436.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/3278",
      "tags": [
        "Exploit",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/7075",
      "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": "POP3Lite before 0.2.4 does not properly quote a . (dot) in an email message, which could allow a remote attacker to append arbitrary text to the end of an email message, which could then be interpreted by various mail clients as valid POP server responses or other input that could cause clients to crash or otherwise behave unexpectedly."
    }
  ],
  "lastModified": "2026-06-16T21:55:22.850",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:pop3lite:pop3lite:0.2.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5ED94BF3-1979-41F7-BEC0-736FD3D2F889"
            },
            {
              "criteria": "cpe:2.3:a:pop3lite:pop3lite:0.2.3b:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "09123A30-F835-488C-ACC7-4447B61C0028"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}