CVE-2007-1398

Exp

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.

Published: 2007-03-10 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-1398 is rated High Exploit Risk (74.8/100): CVSS High severity, with high exploitation likelihood (EPSS 5.74%, 90th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2007-1398

EDB-ID Source Kind Published Link
3434 exploit_db edb 2007-03-08 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2007-1398

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-10-27 5.89% 5.74% -0.15%
2 2025-10-04 4.31% 5.89% +1.58%
3 2025-03-30 — 4.31% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-1398

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 2.0 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 6.9 [email protected]

Weakness enumeration for CVE-2007-1398

OS Trackers for CVE-2007-1398

vendor priority summary link
ubuntu medium CVE-2007-1398 medium priority: Ubuntu including 1 source packages (snort), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): not-affected 3, needs-triage 1. https://ubuntu.com/security/CVE-2007-1398

Affected software / configurations for CVE-2007-1398

Vendor Product Version Raw CPE
snort snort 2.6.1.1 cpe:2.3:a:snort:snort:2.6.1.1:*:*:*:*:*:*:*
snort snort 2.6.1.2 cpe:2.3:a:snort:snort:2.6.1.2:*:*:*:*:*:*:*
snort snort 2.7_beta1 cpe:2.3:a:snort:snort:2.7_beta1:*:*:*:*:*:*:*

References for CVE-2007-1398

cvelogic Threat Intelligence