CVE-2011-1956

CVE-2011-1956 describes a denial-of-service vulnerability in Wireshark version 1.4.5, stemming from an incorrect pointer argument in the bytes_repr_len function. This flaw allows remote attackers to trigger a NULL pointer dereference and application crash by sending arbitrary TCP traffic. With a CVSS score of 4.3, this vulnerability is of medium severity, requiring medium attack complexity but not authentication, and primarily impacts availability. While there is no evidence of active exploitation or Metasploit modules, a proof-of-concept exploit is available on ExploitDB, though community discussion and media coverage are minimal.