Exploits have been released for two Microsoft flaws

[ronjor]

Users are advised to patch immediately.

SecurityFocus

[lotuseclat79]

A related article about this is at CNet News.com:
Code exploits Windows flaw in image file handling
http://news.com.com/Code+exploits+Wi...tml?tag=cd.top

Computer code posted Tuesday can crash vulnerable Windows machines by exploiting a "critical" Windows flaw disclosed by Microsoft in October.

and another breaking exploit regarding Perl:
Danger level rises for Perl app flaws at CNet News.com:
http://news.com.com/Danger+level+ris...tml?tag=cd.top

A type of security flaw in Perl applications that experts thought could lead only to a denial-of-service attack is now believed to be much more serious.

-- Tom