CVE-2008-1034: Apple Mac OS X

High severity, CVSS 9.3. EPSS: 8.2% chance of exploitation in the next 30 days.

Integer underflow in Help Viewer in Apple Mac OS X before 10.5 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted help:topic URL that triggers a buffer overflow.

Affected products

• Apple Mac OS X: up to and including 10.4; version 10.0 only; version 10.1 only; version 10.2 only; version 10.3 only

Published 2008-06-02. Last modified 2026-06-16.