View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2014-7844 medium priority: Ubuntu including 2 source packages (bsd-mailx, heirloom-mailx), 20 status rows across 10 suites (lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 6, released 6, ignored 4, DNE 3, pending 1.
BSD mailx 8.1.2 and earlier allows remote attackers to execute arbitrary commands via a crafted email address.