A number of potentially serious security vunerabilities have been found in Mac OS X 10.2.8 and below. OS X 10.3 appears not to be affected. I haven't seen any information from Apple on when a patch will be released for 10.2 and below.
Details at:
http://www.atstake.com/research/advisories/2003/
http://docs.info.apple.com/article.html?artnum=61798
Story on news.com:
http://news.com.com/2100-1016_3-5098688.html
Details at:
http://www.atstake.com/research/advisories/2003/
http://docs.info.apple.com/article.html?artnum=61798
Story on news.com:
http://news.com.com/2100-1016_3-5098688.html