How severe is CVE-2007-1398?

CVE-2007-1398 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2007-1398 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-1398?

CVE-2007-1398 primarily affects Snort. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-1398?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2007-1398 published?

CVE-2007-1398 was published on 2007-03-10 and last updated on 2026-06-16.

CVE-2007-1398

CVE-2007-1398 is a high-severity vulnerability in Snort with a CVSS 2.0 base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.1)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Snort
Published: 2007-03-10
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2007-1398?: 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.
How severe is CVE-2007-1398?: CVE-2007-1398 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2007-1398 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1398?: CVE-2007-1398 primarily affects Snort. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-1398?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-1398 published?: CVE-2007-1398 was published on 2007-03-10 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:snort:snort:2.6.1.1:*:*:*:*:*:*:*
cpe:2.3:a:snort:snort:2.6.1.2:*:*:*:*:*:*:*
cpe:2.3:a:snort:snort:2.7_beta1:*:*:*:*:*:*:*

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