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-2011-2940 medium priority: Ubuntu including 1 source packages (stunnel4), 5 status rows across 5 suites (hardy, lucid, maverick, natty, upstream): not-affected 4, released 1.
stunnel 4.40 and 4.41 might allow remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.