CoreText in Apple Mac OS X 10.4 through 10.4.10 allows attackers to cause a denial of service (application crash) and possibly execute arbitrary code via crafted text content that triggers an access of an uninitialized object pointer.
Exploitability
AV:NAC:MAu:NImpact
C:PI:PA:P6.8/AV:N/AC:M/Au:N/C:P/I:P/A:P