CVE-2013-0440: Oracle JDK

Medium severity, CVSS 5.0. EPSS: 5.5% chance of exploitation in the next 30 days.

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 through Update 11, 6 through Update 38, 5.0 through Update 38, and 1.4.2_40 and earlier, and OpenJDK 7, allows remote attackers to affect availability via vectors related to JSSE. NOTE: the previous information is from the February 2013 CPU. Oracle has not commented on claims from another vendor that this issue is related to CPU consumption in the SSL/TLS implementation via a large number of ClientHello packets that are not properly handled by (1) ClientHandshaker.java and (2) ServerHandshaker.java.

Affected products

• Oracle JDK: version 1.7.0 only; version 1.6.0 only; version 1.5.0 only; up to and including 1.4.2_40; version 1.4.2_38 only
• Oracle JRE: version 1.7.0 only; version 1.6.0 only; version 1.5.0 only; up to and including 1.4.2_40; version 1.4.2_38 only
• Sun JDK: version 1.6.0 only; version 1.5.0 only; version 1.4.2 only; version 1.4.2_1 only; version 1.4.2_2 only; version 1.4.2_3 only; …
• Sun JRE: version 1.6.0 only; version 1.5.0 only; version 1.4.2 only; version 1.4.2_1 only; version 1.4.2_2 only; version 1.4.2_3 only; …

Published 2013-02-02. Last modified 2026-06-16.