CVE-2009-1093: Sun JDK

Medium severity, CVSS 5.0. EPSS: 3.4% chance of exploitation in the next 30 days.

LdapCtx in the LDAP service in Java SE Development Kit (JDK) and Java Runtime Environment (JRE) 5.0 Update 17 and earlier; 6 Update 12 and earlier; SDK and JRE 1.3.1_24 and earlier; and 1.4.2_19 and earlier does not close the connection when initialization fails, which allows remote attackers to cause a denial of service (LDAP service hang).

Affected products

• Sun JDK: up to and including 1.5.0; up to and including 1.6.0; version 1.5.0 only; version 1.6.0 only
• Sun JRE: up to and including 1.5.0; up to and including 1.6.0; version 1.5.0 only; version 1.6.0 only; up to and including 1.3.1_24; version 1.3.1 only; …
• Sun SDK: up to and including 1.3.1_24; version 1.3.1 only; version 1.3.1_01 only; version 1.3.1_01a only; version 1.3.1_02 only; version 1.3.1_03 only; …

Published 2009-03-25. Last modified 2026-06-16.