CVE-2016-9201

A vulnerability in the Zone-Based Firewall feature of Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to pass traffic that should otherwise have been dropped based on the configuration. More Information: CSCuz21015. Known Affected Releases: 15.3(3)M3. Known Fixed Releases: 15.6(2)T0.1 15.6(2.0.1a)T0 15.6(2.19)T 15.6(3)M.

• CWE-20
• CWE-200

• http://www.securityfocus.com/bid/94811Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1037419Third Party Advisory, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161207-ios-zbfMitigation, Vendor Advisory
• http://www.securityfocus.com/bid/94811Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1037419Third Party Advisory, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161207-ios-zbfMitigation, Vendor Advisory

Published

Dec 14, 2016

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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