Cisco Security Advisory – On February 16, 2016, a critical vulnerability in the GNU C library (glibc) was publicly disclosed. Multiple Cisco products incorporate a version of glibc that may be affected by the vulnerability. The vulnerability could allow an unauthenticated, remote attacker to trigger a buffer overflow condition that may result in a denial of service (DoS) condition or allow the attacker to execute arbitrary code on the affected device. This advisory will be updated as additional information becomes available. Cisco will release software updates that address this vulnerability. Workarounds that address this vulnerability are not available.