CVE-2007-1398

Status: ModifiedHigh (7.1)—💥 Exploit

The frag3 preprocessor in Snort 2.6.1.1, 2.6.1.2, and 2.7.0 beta, when configured for inline use on Linux without the ip_conntrack module loaded, allows remote attackers to cause a denial of service (segmentation fault and application crash) via certain UDP packets produced by send_morefrag_packet and send_overlap_packet.

CVSS

Version: 2.0
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C
Base score: 7.1

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 5.85%
Percentile among all scored CVEs: 93
Score date: 10/6/2026

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.

Published on Exploit-DB · Snort 2.6.1.1/2.6.1.2/2.7.0 - 'fragementation' Remote Denial of Service (3/8/2007)

Affected technologies (1)

Snort — Snort

CWEs

NVD-CWE-Other

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2007-1398",
  "cveTags": [],
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          "baseScore": 7.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
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        "obtainAllPrivilege": false,
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  "published": "2007-03-10T22:19:00.000",
  "references": [
    {
      "url": "http://www.osvdb.org/33024",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/22872",
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  "vulnStatus": "Modified",
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      "lang": "en",
      "value": "The frag3 preprocessor in Snort 2.6.1.1, 2.6.1.2, and 2.7.0 beta, when configured for inline use on Linux without the ip_conntrack module loaded, allows remote attackers to cause a denial of service (segmentation fault and application crash) via certain UDP packets produced by send_morefrag_packet and send_overlap_packet."
    },
    {
      "lang": "es",
      "value": "El preprocesador en Snort 2.6.1.1, 2.6.1.2, y 2.7.0 beta, cuando se configura para usuarios inline usado sobre Linux sin el modulo cargado ip_conntrack, permite a atacantes remotos provocar denegación de servicio (fallo de segmentación y caida de aplicación) a través de ciertos paquetes UDP producidos por send_morefrag_packet y send_overlap_packet."
    }
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  "lastModified": "2026-06-16T22:37:30.550",
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