CVE-2012-3423: Red Hat Icedtea-Web

High severity, CVSS 7.5. EPSS: 6.2% chance of exploitation in the next 30 days.

The IcedTea-Web plugin before 1.2.1 does not properly handle NPVariant NPStrings without NUL terminators, which allows remote attackers to cause a denial of service (crash), obtain sensitive information from memory, or execute arbitrary code via a crafted Java applet.

Affected products

• Red Hat Icedtea-Web: up to and including 1.2; version 1.0 only; version 1.1 only

Published 2012-08-07. Last modified 2026-06-16.