The mailreader mutt was updated to fix a security issue in displaying mail headers, where a crafted e-mail could cause a heap overflow, which in turn might be used by attackers to crash mutt or potentially even execute code.
Security Issues references:
* CVE-2014-0467
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0467>