Is CVE-2007-0342 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2007-0342, but active exploitation has not been confirmed.

Can CVE-2007-0342 be exploited remotely?

Yes. CVE-2007-0342 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2007-0342?

CVE-2007-0342 has a CVSS score of 7.5 (HIGH).

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HIGHPOC

CVE-2007-0342

CWE-399Published: January 18, 2007· Updated: Jun 16, 2026

7.5

CVSS v3.1

Official Description

WebCore in Apple WebKit build 18794 allows remote attackers to cause a denial of service (null dereference and application crash) via a TD element with a large number in the ROWSPAN attribute, as demonstrated by a crash of OmniWeb 5.5.3 on Mac OS X 10.4.8, a different vulnerability than CVE-2006-2019.

NVD Source

Technical Analysis

CVE-2007-0342 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

A proof-of-concept (PoC) exploit exists for CVE-2007-0342. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.