CVE-2009-2675: Sun JDK

High severity, CVSS 10.0. EPSS: 4.4% chance of exploitation in the next 30 days.

Integer overflow in the unpack200 utility in Sun Java Runtime Environment (JRE) in JDK and JRE 6 before Update 15, and JDK and JRE 5.0 before Update 20, allows context-dependent attackers to gain privileges via unspecified length fields in the header of a Pack200-compressed JAR file, which leads to a heap-based buffer overflow during decompression.

Affected products

• Sun JDK: up to and including 6; version 5.0 only; version 6 only
• Sun JRE: up to and including 6; version 5.0 only; version 6 only

Published 2009-08-05. Last modified 2026-06-16.