Unspecified vulnerability in the 2D component in Oracle Java SE and Java
for Business 6 Update 21, and 5.0 Update 25 allows remote attackers to
affect confidentiality, integrity, and availability via unknown vectors.
NOTE: the previous information was obtained from the October 2010 CPU.
Oracle has not commented on claims from a reliable downstream vendor that
this is related to a calculation error in right-to-left text character
counts for the ICU OpenType font rendering implementation, which triggers
an out-of-bounds memory access.

It was discovered that a miscalculation in the OpenType font
rendering implementation would allow out-of-bounds memory access. This
could allow an attacker to execute arbitrary code with the privileges
of the user running a java application.