Original release date: February 25, 2015

Cisco has identified a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. The vulnerability is due to improper processing of malformed IPv6 packets carrying extension headers. Cisco Network Convergence System 6000 (NCS 6000) and Cisco Carrier Routing System X (CRS-X) running an affected version of Cisco IOS XR Software are affected by this vulnerability.

Users and administrators are encouraged to review the Cisco Advisory and apply the necessary updates.

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