CVE-2015-6301: Cisco Asr 9001

Medium severity, CVSS 5.0. EPSS: 2.4% chance of exploitation in the next 30 days.

The DHCPv6 server in Cisco IOS on ASR 9000 devices with software 5.2.0 Base allows remote attackers to cause a denial of service (process reset) via crafted packets, aka Bug ID CSCun72171.

Affected products

• Cisco Asr 9001
• Cisco Asr 9006
• Cisco Asr 9010
• Cisco Asr 9904
• Cisco Asr 9912
• Cisco Asr 9922
• Cisco IOS XR: version 5.2.0_base only

Published 2015-09-20. Last modified 2026-06-17.