Is CVE-2007-1398 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2007-1398, but active exploitation has not been confirmed.

Can CVE-2007-1398 be exploited remotely?

Yes. CVE-2007-1398 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2007-1398?

CVE-2007-1398 has a CVSS score of 7.1 (HIGH).

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HIGHPOC

CVE-2007-1398

NVD-CWE-OtherPublished: March 10, 2007· Updated: Jun 16, 2026

7.1

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2007-1398 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2007-1398. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.