wireshark is vulnerable to arbitrary code execution. The vulnerability exists as a format string flaw was found in Wireshark. If Wireshark read a malformed packet off a network or opened a malicious dump file, it could crash or, possibly, execute arbitrary code as the user running Wireshark.
lists.opensuse.org/opensuse-security-announce/2009-06/msg00003.html
secunia.com/advisories/34542
secunia.com/advisories/34778
secunia.com/advisories/34970
secunia.com/advisories/35133
secunia.com/advisories/35224
secunia.com/advisories/35416
secunia.com/advisories/35464
wiki.rpath.com/Advisories:rPSA-2009-0062
www.debian.org/security/2009/dsa-1785
www.mandriva.com/security/advisories?name=MDVSA-2009:088
www.redhat.com/security/updates/classification/#moderate
www.redhat.com/support/errata/RHSA-2009-1100.html
www.securityfocus.com/archive/1/502745/100/0/threaded
www.securityfocus.com/bid/34291
www.wireshark.org/security/wnpa-sec-2009-02.html
www.wireshark.org/security/wnpa-sec-2009-03.html
access.redhat.com/errata/RHSA-2009:1100
exchange.xforce.ibmcloud.com/vulnerabilities/49512
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5976
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9526
www.exploit-db.com/exploits/8308
www.redhat.com/archives/fedora-package-announce/2009-May/msg00675.html
www.redhat.com/archives/fedora-package-announce/2009-May/msg01167.html
www.redhat.com/archives/fedora-package-announce/2009-May/msg01213.html